Over-Night Biological Peel

A potent, overnight peel for smoother, more even skin.
  • Helps to gently renew skin, leaving texture softer, more even, and vibrant after first use
  • With continued use, helps reduce the look of pore size and ameliorate the effects of free-radical and photo-damage
  • Non-comedogenic, oil-free, and dermatologist tested
  • May be used by all skin types
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"It's extremely powerful but so gentle on my skin-- by morning, my skin is softer, smoother and clearer."

Roshini, Kiehl’s Insider

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How to Apply:
-Cleanse skin thoroughly prior to application
-Apply face peel at night, avoiding immediate eye area, and allow to dry on skin
-Leave on overnight and remove with warm water in the morning
-Use three times per week, or more as needed

HEPES, or Hydroxyethylpiperazine Ethane Sulfonic Acid, is a chemical buffer which is widely used in cell culture to maintain physiological pH. This amino-sulfonic derivative helps to improve skin and limits roughness.

SO-di-em HI-ah-loor'uh'nayt

Sodium Hyaluronate is the sodium salt of Hyaluronic Acid. It is used as a moisturizing agent, viscosifier and emulsifier. It forms a transparent film on the skin which has a soothing and lubricating action. It is a powerful humectant as it is capable of binding 1,800 times its own weight in water. See also: Hyaluronic Acid.

yu-'rE-uh

An enzyme activator naturally present in the surface layer of the skin (epidermis), Urea accelerates the natural process of cell renewal through the exfoliation of dead surface skin cells. The ingredient has a water binding effect in the top layers of the skin thus acting as a natural moisturizing agent in human skin.

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Over-Night Biological Peel
Already Asked: 43 Questions, 371 Answers
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Kiehl's Since 1851 Store asked: Why did you choose this?
Donna S: To help fade acne dark spots Jul 13, 2014
annique j: used before and noticed a huge beautiful change in my skins appearance after first use Jul 13, 2014
Dia K: Works really well. I have seen the lines in my forehead become less pronounced. Light and non greasy for my oily skin. Jul 8, 2014
Megan D: Reviews looked good. Have never tried this type of product. Jul 7, 2014
Annette E: Even skin Jul 6, 2014
Rachel P: read the reviews and thought it would be effective at minimizing my poors Jul 6, 2014
shawna s: positive reviews on total beauty website. Jul 5, 2014
Kathy M: Lines! Jul 4, 2014
megan s: corrective Jun 30, 2014
Kari B: Redness, visible pores, wrinkles Jun 29, 2014
Marshal M: The cap/pump broke on this product immediately. I was only able to use twice. Jun 29, 2014
Melissa G: i thought a peel would be good for my skin but this one actually gave me more acne Jun 25, 2014
cathy t: my friend said it feels good. Jun 24, 2014
Rhonda P: This product is misleading. It doesn't take over-night to work. Just give it an hour (even less) & you won't believe the results. I still can't. I have extremely sensitive skin due to a rare mito disease & was pretty iffy about trying it. No irritation, no burn, nothing. But fantastic results! I went to bed with a few very red bumps. By morning 2 were totally gone & the other barely noticable. My skin was so even toned, firmer, smoother & pores smaller. It's amazing. Jun 18, 2014
Sandra S: I am very interested in using a peel - I have tried several Kiehl product and would like to try this. Jun 17, 2014
april p: reviews sounds as if customers are satisfied with the result of this product Jun 16, 2014
Maren F: this is great for the skin Jun 7, 2014
belinda e: To try Jun 7, 2014
Linda C: wanted to try it. Jun 3, 2014
Jaime V: Redness and healthier skin Jun 1, 2014
alicia m: Reviews were good May 23, 2014
john g: LOVELY May 23, 2014
Kiok C: try bio peel May 19, 2014
Jacque E: Reviews May 19, 2014
erin v: I know the importance of regular peels and want to try this that I can do at home. May 19, 2014
Beverly F: The elements, stress and aging are starting to wreck havoc with my skin. I felt it was time to take better care of the one I have left. May 19, 2014
Angela D: My facialist recommended this product. May 19, 2014
marisa c: to help reduce fine lines May 19, 2014
Sarah J L: running low on midnight recovery, which I LOVE, but wanted to try something new. May 19, 2014
Joan B: I have ordered this before and am re-ordering... when I get up in the morning, I have smoother facial and neck skin to work with! May 18, 2014
Noelle P: would like to achieve the smoothest skin possible May 17, 2014
Jessie T: have been using this product for years. It works very well. May 16, 2014
Siqiao Y: I want to try to see if it will help me with my acne scars. May 16, 2014
Tracy C: Previous purchase - refill May 15, 2014
Kristal P: I found an old bottle in my cabinet that I never used and so I started using it and now I'm hooked May 15, 2014
Michelle G: I haven't tried this yet and am impressed by the reviews. May 14, 2014
Jayme S: Works great! May 14, 2014
alyssa s: read an article stating it was awesome May 8, 2014
Kari A: Reviews were great May 6, 2014
Rebeca M: Trying to start a good routine with my skin and I hope this will be a good base May 5, 2014
Cherisse L: would like to try a home peel that may not be as strong and damaging as a spa peel. May 4, 2014
ESTHER L: OMG! This is the most simple and effective way I found to take care of my skin, I use it once a week, right before going to bed I take all my makeup off, I wash my face and I apply this smooth peeling leaving it overnight, next morning I wash my face and apply the micro-dermabrasion to remove all dead skin...the results are amazing!!! Apr 30, 2014
Deanna J: to improve skin texture Apr 30, 2014
Lori D: Ran out Apr 29, 2014
linda t: would like to try it Apr 27, 2014
torrey s: needed a good biological peel and read good things about this product on other beauty sites Apr 25, 2014
Julie W: I love the line reducing concentrate and use it everyday. I thought this would be good to try. Apr 22, 2014
Shannon C: good review on another website Apr 16, 2014
Geri Jo M: Wanted to try and I. LOVE it!!! Apr 12, 2014
Susan T: Love the results. My skin seems more radiant. Apr 4, 2014
Kimberly S: I have read GREAT reviews and am very excited to try! Apr 2, 2014
Anran L: I think that the ingredient would work well for my sensitive and uneven skin Mar 29, 2014
Athena B: I wanted to try it to see if it helps with my uneven skin tone, and to see how it helps with my dryness and acne Mar 28, 2014
Christine W: Have not tried yet! Mar 27, 2014
Laura W: Crossing my fingers that this will help my acne marks! Wish me luck! Mar 26, 2014
Michelle W: I want to shrink my pores. Mar 20, 2014
Laura J: reviews look great. at 32 I'm finally over my acne and need some restoration, but still have sensitive skin Mar 13, 2014
Eve D: Would like more even skin and help with acne Mar 11, 2014
Rita H: Sounded interesting and had good reviews Mar 10, 2014
Amber W: works great on my forehead for dry skin Mar 10, 2014
sara g: Tried the sample, loved it...coming back for more. Skin felt softer and smoother the next morning. Look forward to using it regularly so my serums can work their magic better Mar 10, 2014
Susan G: this product received excellent reviews Mar 9, 2014
Lynda F: I have used and like this product Mar 5, 2014
Dana J: I was on facebook and saw my skin treatment needed to change with my age... Im gonna be 40 and I do use the same treatment I did in my 20s. Feb 26, 2014
DENISE C: I am looking forward to seeing how the texture of my skin will change. I just ordered but the reviews on line is what prompted me to purchase. I also purchased the Epidermal Re-Texturing Microdermabrasion; excited to see how my skin will change. I am a Kiehl's fan. Feb 22, 2014
Kim S: To make my skin smoother Feb 20, 2014
Kristine Q: I've been using this religiously every other night for the past 5 years. People always remarks on how good my skin looks. Feb 17, 2014
Sarah S: Reviews Feb 16, 2014
Ruth H: Need to look better Feb 16, 2014
Jane H: have used before and liked Feb 9, 2014
Jessica C: I've tried other peels but they didn't show much results so I'm hoping this product will. Feb 3, 2014
Robin H: Need a good resurfacing treatment Jan 31, 2014
Maria S: Curious if it works. Jan 29, 2014
Tracie L: I like the product Jan 28, 2014
Mary Ann S: My 50 year old skin feels like brand new the next morning when I wash it off. Amazing...and my skin is sensitive but I do not get a rash or any redness from this. Jan 27, 2014
Claire H: anti-aging support Jan 27, 2014
Threse M: Looking for something to make my skin look smoother and more even. Don't want to go with a harsh chemical peel and wanted to give this one a try. Jan 21, 2014
ELENA S: i want my skin look glowy and healthy. Jan 21, 2014
Becky L: I'm looking for a product to help smooth my skin gently. Jan 21, 2014
Serena Y: Tried sample, skin felt great! Jan 21, 2014
Jennifer k: reccomended for people who break out Jan 19, 2014
Norah S: Would like to try it. Jan 18, 2014
Tricia S: I have used it & liked its results Jan 12, 2014
margaret l: I love the way it makes my skin feel.It feels very smooth! Jan 11, 2014
MICHELLE V: for my acne scars and uneven skin Jan 9, 2014
Carolyn R: I liked the reviews by long time buyers and those over 54 Jan 8, 2014
Lauren W: I want to reduce the size of my pores - hoping this works! Dec 31, 2013
Laura V: good reviews for improving skin Dec 31, 2013
Judy F: same as above Dec 28, 2013
Kristina F: I think I could benefit Dec 27, 2013
Meiriyanti W: curious.... Dec 25, 2013
Felicia I: First time user I'll let you know how it works after use. Dec 23, 2013
V A: Have used this product and It does what it says. Dec 22, 2013
Lindsey S: it got great reviews Dec 20, 2013
Luis L: wanted to try it, don't know if it really works thou. Dec 18, 2013
David W: Looking for a new facial product Dec 15, 2013
Heather H: Want to improve clarity and tone of skin. Dec 14, 2013
Catherine C: I've purchased multiple times, wonderful product Dec 13, 2013
michelle b: I just like the idea of waking up in the morning with refreshed and renewed skin. Can't wait to try this. Dec 13, 2013
Kristin D: I use peels and would like to try a natural one Dec 10, 2013
Bonnie P: exfoliating, clarifying Dec 9, 2013
Aimee L: I love peels Dec 9, 2013
irina a: i defenetly recommend!!! Leaves my skin soft and rejuvenate. Dec 7, 2013
Danielle M: I have some spots of sun damage on my face, so I want to try this out. Dec 5, 2013
stephanie g: i wanted to try something new for a night cream, so I will give it a shot. Dec 5, 2013
Larissa D: I read the reviews and would like to check it out Dec 5, 2013
Hyo Seung Y: my absolute favorite among all the beauty products I have ever used. Dec 4, 2013
Terri C: Gift for my daughter Dec 4, 2013
Sharon D: Skin needs rejuvenating, sounds like this will do it. Dec 4, 2013
danji j: friend recommendation Dec 4, 2013
Carol F: dark spot Dec 2, 2013
Curtis A: Recommended Dec 1, 2013
Cathy L: have been using for a while; nice smooth skin afterwards Nov 30, 2013
Nicole C: New never saw Nov 30, 2013
MI H: I heard this is okay for the sensitive skin too, so I wanted to try. Nov 29, 2013
Mikkel H: It's perfect for refreshing the look of the skin - and to prevent and fight ingrown beard hairs! Nov 25, 2013
jian y: very good Nov 25, 2013
Travis H: trying to help reduce lines Nov 25, 2013
Vivian B: Mom Loves it. Nov 24, 2013
Carey L: The reviews were glowing! Nov 23, 2013
Regina B: Request Nov 22, 2013
Jinmao J: Just try Nov 21, 2013
Emilia B: One for my purse! Nov 21, 2013
LILI L: Give it a try Nov 20, 2013
Jo Ann M: I would like to try a professional peel and thought this would be a good start point before I commit Nov 20, 2013
Jinmei T: Yes Nov 16, 2013
ELOISE C: Gotta be good. It's Kiehls !!!!! Nov 15, 2013
Fran M: really softens skin Nov 15, 2013
Marlene E: It works, my skin is dewy and radiant after one application Nov 15, 2013
Deborah S: I've used it before and really like the way it smoothes out my skin and reduces the pores. Nov 12, 2013
Joanna B: need to exfoliate more Nov 11, 2013
Charlotte s: I just love it. It's totally remarkable. People notice a difference Nov 11, 2013
Jody S: Based on reviews Nov 4, 2013
lucy b: I'm looking for something that is facially rejuvenating. Nov 4, 2013
Barbara S: Cousin suggested to me Oct 31, 2013
Dina M: I have been using this for several years. Oct 27, 2013
Michelle H: Age Oct 24, 2013
Susan M. C: I have been using this for almost a year. It slowly and delicately removes dark spots and other sun damage lesions. No unpleasant side effects. I love it ! Oct 2, 2013
Yuefei W: Friends recommend this for me, says it works for pores and spot Sep 30, 2013
Joan J D: Just wanted to try product Sep 30, 2013
Susana S: To try it out Sep 30, 2013
Christina G: My skin glows the next morning! Sep 30, 2013
Lilian B: I enjoy this product so I bought it as a gift for my sister in law Sep 29, 2013
Angi W: Wanted to add a more active night lotion to my regimen. Sep 28, 2013
Valerie C: I want a dermatologist-like treatment without leaving my home. Sep 26, 2013
Jennifer O: want to try it. Sounds intriguing. Sep 24, 2013
Julie M: Wanted to try an exfoliator for sun damage on my face and neck Sep 14, 2013
Sheryl C: My skin needs to be rejuvenated Sep 11, 2013
Anne Michelle L: looking forward to trying it Sep 9, 2013
Doron C: used before Sep 3, 2013
Michelle A: Reviews was great Sep 2, 2013
Brooke S: I'm 23 and still have acne- the reviews on this product make me hopeful that it will clear up my skin. Sep 2, 2013
Catherine V: I read a review online, and need some good skin care products Aug 30, 2013
Patricia D: Kiel's products work- and don't cost a fortune Aug 28, 2013
Yumei C: I love it Aug 26, 2013
Linda D: Aging skin trial on this product. Good reviews. Aug 19, 2013
Graham R: Makes a noticeable difference in skin tone and texture over night. Aug 18, 2013
Pamela B: For a weekly rejuvenation of skin surface. Aug 14, 2013
Betty C: Creamy smooth texture. Aug 13, 2013
Erin R: To try to help reduce my fine lines. Jul 30, 2013
christine e: I tried the samples and loved it Jul 20, 2013
Jean D: It sounds like it will improve skin tone and reduce pore enlargement. Jul 6, 2013
Judith B: I have a friend that uses this two or three times a week and loves it. I think it has helped improve the condition of her skin and I decided to give the product a try. Jul 4, 2013
Michael M: pore shrinkage Jun 24, 2013
James M: Looks interesting...thought I'd give it a try. Jun 22, 2013
Cindy F: Wanted to try it out - help with skin appearance Jun 18, 2013
Andrea S: Reviews were helpful and I am hoping it can revitalize my skin texture - hopefully as quickly as some of the other customers have said.. Jun 17, 2013
Nancy F: i like the product and use the samples for travel Jun 17, 2013
Teresa D: I would like to do a bi monthly peel to reveal younger skin underneath. Have pregnancy mask I believe this will help with. Jun 17, 2013
Jin W: good reviews Jun 17, 2013
l r r: Based on the reviews, I am trying it out to see what it will do for my uneven skin tone, etc. Stay tuned! Jun 17, 2013
Linda S: Good reviews Jun 16, 2013
Amanda D: try Jun 14, 2013
question: overnight mask at work ...love it..also it says "minimize pores" ...thats what i was looking for... Jun 9, 2013
Tania D: I would like to try Jun 3, 2013
Becky K: Good reviews - I have used this peel the past year - I have senstive skin and this works great, makes my skin look very refreshed. May 14, 2013
denise d: thought i'd try an inexpensive peel like this first before going big time at a spa or something.

Just an update. I love this product. It's simple, easy and I can't believe how shiny my skin is in the morning after I wash the peel off. I love it!
May 13, 2013
Carrie H: reviews May 8, 2013
Linda K: To try to make my skin appear younger. May 8, 2013
Eunji Y: I checked the Korean website and It says It can be good for pimple?,, maybe May 4, 2013
Cecile B: to uncover new skin May 3, 2013
Nicole F: Want to try to see if it will help. May 2, 2013
Lindsay D: After using the sample, I was hooked! Apr 27, 2013
maya j: love this Apr 25, 2013
Gale H: To help smooth wrinkles and make my skin clearer. Apr 24, 2013
Lynne G: To refresh my skin periodically Apr 22, 2013
yoonmi l: i'm concerned about the texture of my skin. frekcles, and sometimes breakouts. hopefully this helps balance, and dry out . Apr 12, 2013
Alyson K: Easy to use and effective. Apr 9, 2013
Susan K: This prouct makes my skin look bright and refreshed in he AM Apr 7, 2013
lihong z: good Apr 6, 2013
Sharon P: I wanted to see new skin instead of tired skin. Apr 3, 2013
Xiaozhi S: it's a good choice. Apr 1, 2013
Brittany H: at home facial results Mar 31, 2013
Donna H: This product was on my wish list after placing my first order. Based on it's description, I can't wait to see what it will do for me. Mar 29, 2013
Naama M: I purchased this it before and I really like it. my face feels sofe and looks better when I wake up in the morning. I can actually see the diference Mar 25, 2013
Sonja J: My face has been feeling rough, dry and dull this winter. I'm hoping this will give me a spring glow. Mar 25, 2013
Kristen M: giving it a try Feb 15, 2013
Jinlin Y: i think is good. Feb 15, 2013
Jacquelyn W: Need a product for hyperpigmentation, and one of the reviewers found this item helpful for that issue. Feb 14, 2013
Carol M: I like the product reviews Feb 12, 2013
sandi m: old Feb 10, 2013
Beverly S: I saw a difference in my skin the first morning after i used it...it has just continued to improve my skin tone and texture. Feb 8, 2013
JOANNE Y: I have bumpy skin, want something to assist exfoliating. Feb 3, 2013
Rose F: I've been noticing bumps on my skin lately; hoping this will help. Feb 2, 2013
Jennifer S: curious to try a peel, not a product I've tried much of... Jan 28, 2013
hui z: l like it . Jan 13, 2013
Anita S: Saw it recommended in a magazine interview Jan 13, 2013
Nicole F: A Glamour article recommended it Jan 12, 2013
Kellie H: Used a sample, loved it , now ordering a bigger one. Jan 7, 2013
zaha a: bec my skin is getting dry and pale Jan 4, 2013
melissa hope a: looked interesting and reviews were good. Dec 31, 2012
Chetna S: you have wonderful products Dec 31, 2012
Kristina B: to brighten my skin and keep smoothe Dec 30, 2012
Alexis D: Really like it Dec 30, 2012
RUI H: like Dec 30, 2012
HANH N: It has many positive reviews. I want to give it a try Dec 29, 2012
Pamela L: I would like to reduce my fine lines, age spots and have softer skin Dec 28, 2012
Kimberly C: looking for a less expensive solution for derma chemical peels than going to the dermatologist, had good reviews, there was a promotion going on so i could afford it. Dec 27, 2012
Emily M: i'm hoping it will make my pores look smaller Dec 27, 2012
Ann H: The reviews were the basis for my choice Dec 27, 2012
Huijun L: I saw the reviews from other people. I just want to try it out. Dec 26, 2012
JON G: To slough off my old flesh and make me smooth like a baby's bottom. Dec 26, 2012
Carmella R: An excellent exfoliator! Keeps me from spending $200+ on microdermabrasion and other skin treatments. Dec 24, 2012
Minhvan B: Need to try a new facial product to renew my skin Dec 24, 2012
Julia Z: At my age I think I need a peel so I thought I'd give it a try. Dec 23, 2012
jing w: my friend recommand it Dec 23, 2012
Chris S: love product Dec 18, 2012
Nyoka B: interested in reducing dark spots Dec 15, 2012
Lori S: Heard from Friends that this is AMAZING! Can't wait to try it! Dec 12, 2012
Tia T: to help balance the skin Dec 12, 2012
Camille O: recommended by my sister Dec 11, 2012
Patricia F: Recently lost my esthetician and can't find another in my area. I was looking for something I could do myself and stumbled upon Kiehl's...I love it. Very gentle yet effective. Makes my skin feel so good for the next few days! I have recommended to many. Dec 10, 2012
Michael E: Want to peel the horny layer. Lol. Good luck with that. Gonna STAY horny but would like fresher skin. Dec 9, 2012
mary p: this is the only product I've ever used that showed overnight results Dec 4, 2012
Roxana H: it is wonderful, but I only use it once or maybe twice a month. A little bit harsh for me. Dec 3, 2012
marguerite g: interested in seeing if it makes a difference in my skin Dec 3, 2012
Kimberly P: Wanted to try to clear up skin - Nov 30, 2012
Jessalyn E: I just placed an order last week, but with your offer of 3 deluxe samples I wanted to try something else. This one had such rave reviews, I thought I'd give it a try. Nov 23, 2012
deborah b: see if it really works Nov 21, 2012
Jacqueline H: i never get facials. hoping this will help. Nov 20, 2012
Claire W: maybe it could help repairing my skin from acne damaged Nov 19, 2012
Adriana P: natural peeling Nov 16, 2012
Virginia S G: always wanted to do a peel and thought this would be a great start Nov 4, 2012
Ann Marie H: I'm looking for anything to make my aging, tired skin look better and this got good reviews. Nov 3, 2012
Deron A: sounds like a great product Nov 2, 2012
Connie M: thinking of a peel lately and trust your products Nov 1, 2012
Diane N: skin feels refreshed in the morning Oct 15, 2012
Mary D: reduce porres & improve skin texture Oct 15, 2012
Betty F: I have large open pores Oct 15, 2012
Lisa R: Looking for a peel product and purchased based on customer comments and recommendations. Can't wait to try it. Oct 14, 2012
Paula D: trial Oct 14, 2012
Lynette D: Want to try. Oct 14, 2012
Sungmin L: Based on the good review Oct 6, 2012
Carden S: A friend uses it and loves it! Oct 5, 2012
Sondra W: Have used for one year and find it fabulous for younger looking skin Sep 27, 2012
Margaret M: need one Sep 24, 2012
Lindsay C: I am so excited to try this product. I have acne-prone, dry skin. Sep 24, 2012
Angela L: After using sample, liked it how soft it makes my skin Sep 24, 2012
Lelaine P: Wake up with softer skin. Gives me a "vacation glow". Sep 24, 2012
Theresa S: I have been looking for an easy peel and based on the customer reviews I am excited to try this. Sep 23, 2012
Emma S: I have acne scars and large pores. I want to give a try for improving how they look. I tried Kiehl's face wash before and it has been my absolutely favorite. You have to know I have tried all kinds of 1st line products. Only Kiehl's makes me smile after I use it. Sep 22, 2012
Lisa K: wanted to try since I've been using the Vitamin C concentrate and the Midnight recovery concentrate... Sep 22, 2012
Teresa B: Have been looking for exfoliate for my face which doesn't aggravate my rosacea and this seemed like a good match Sep 22, 2012
Raquel S: I've been using the Overnight Biological Peel for years and it makes such a difference in my skin. I sometimes get lazy and neglect my skin and start to see a difference. After using the peel 2-3 times in just one week my skin is back to normal and looking great again. I also have super sensitive skin and have never had issues with this product. It's a must have in my medicine cabinet. Sep 21, 2012
Jun Y: good Sep 21, 2012
Annie P: curious to see whether this works or not Sep 19, 2012
Nina R: Rave reviews Sep 18, 2012
JOYCE M: Have found Kiehl's products to live up to way they say they will do and want to see how this one works for me. Sep 18, 2012
Derrick J: It's awesome! Does a great job overnight and you wake up with a glow. Sep 18, 2012
Willie R: This is the absolute best product I have ever used for my skin. Seriously. Results are visible the next morning. My skin is brighter, more evenly toned, pores are smaller, and I just have an overall glow after using this product. I suffer from occasional breakouts and mild rosacea, and this is a miracle worker! It takes the redness away and soothes those problem areas! Sep 18, 2012
Candace W: I wanted to try it. Sep 13, 2012
Aide D: My Daugather.Kahie De La Paz De EL Paso Texas Sep 11, 2012
Amy S: I have oily skin and sometimes feels like there is a layer of grime that requires something stronger like a peel to remove. Sep 8, 2012
Dong L: one of my friend suggest buy it. Sep 6, 2012
Patricia M: It looks interesting and helpful Sep 4, 2012
Ellen S: I wanted to try an at home peel. also most of customer comments were very positive. Sep 2, 2012
Valerie S: I chose this because I wanted smoother, more even skin. I love how this product makes my skin look and feel. It's also very gentle. Aug 24, 2012
Cynthia D: Lightweight, goes on easy and it not greasy. The first moisturizer that my husband uses every night! Aug 19, 2012
Kathy S: Have not tried it but would like to Aug 18, 2012
Michelle I: i use this religiously and i LOVE IT. please never discontinue it or i will surely shrivel up and die : ) Aug 14, 2012
Anna G: Hoping that this product does what it says. Sounds like a refreshment to the skin. Aug 12, 2012
Karolina S: Really happy with other products I have tried so far, and this had excellent reviews. Aug 10, 2012
Grace R: It sounds like it really works. Aug 8, 2012
Mark S: To help even out my skin tone from acne scaring. Aug 5, 2012
JUN D: I have used another night cream for long time.I want to change this one see if it does work well as well. Jul 18, 2012
Emily K: second time purchasing - i can tell such a difference in the clarity of my skin with this product - i use instead of a moisturizer in the summer Jul 16, 2012
eldora m: try to diminish sunspots or age spots. giving it a try to even and brighten skin. Jul 15, 2012
Tomy S: liked the reviews Jul 5, 2012
Kathy S: To try it out and see if it brightens up my 57 year old skin. Jun 7, 2012
Rahul M: I wanted to try out some kind of night treatment May 29, 2012
Lynn P: I'll try anything. May 27, 2012
BRIANNA B: Many positive reviews for this so I am trying it out May 23, 2012
Suzanne M: Heard great things and wanted to try it. May 14, 2012
Sabrina B: I use this nightly and it makes my skin flawless. This product makes taking care of your skin easy. May 11, 2012
Vicki B: ad in all you magazine May 6, 2012
ann h: I liked the reviews May 5, 2012
Mireille A: Sounds simple and easy to use with great effects based on the reviews. Looking at the product information and ingredients they are fit with my requirements for sensitive skin and environmental concern. May 2, 2012
Sai M: I want to have a perfect skin. Apr 29, 2012
Joanne D: Love this product! Keeps my skin smooth and clear Apr 28, 2012
PATRICIA C: I choose this product because Kiehl's has the best products for sensitive skin, and it works overnight while you sleep! It couldn't be easier. Apr 26, 2012
Karen F: wanted to try Apr 26, 2012
Colin F: black heads Apr 24, 2012
ALETHIA A: I always wanted to make a peeling to my face so I want to try this product. Apr 20, 2012
Rocio Z: Friend of mine Apr 17, 2012
salvatrice m: I have been using this product for 4 years! Apr 16, 2012
Donna W: I tried a sample with an earlier order, and I was very pleased with the results after just one use! Can't wait until the full bottle arrives so I can start using this regularly. Apr 12, 2012
Irene G: Tried a sample and loved the way it made my skin feel. Apr 4, 2012
brandy m: heard about this in magazine Apr 1, 2012
Linda G S: All You magazine Mar 30, 2012
Jennifer M: I love it! Mar 30, 2012
GERTRUDE W. R: Based on my past experiences with Kiehls products, I trust this product will be effective. Mar 24, 2012
A shopper asked: Is this product safe to use during pregnancy? May 31, 2012
Answer this · Send to friends Good question? Yes (25) No (13)
Farida H: Maybe Kiehls can answer this question since so many of us think its a good question and it hasnt been answered... Apr 19, 2014
Reply to Farida Good answer? Yes (0) No (0)
A shopper asked: can we layer serums on with this as well, and if so does serum go first for does the peel go first? Feb 18, 2013
Answer this · Send to friends Good question? Yes (9) No (0)
GERTRUDE W. R: I would suggest using the peel first and solo for a few days. Once you see how much exfoliation occurs, apply your serum every 2 days. You want your skin to fully exfoliate (peel) and follow-up with the serum on a clear facial palette - the serum will be more effective. Mar 4, 2013
Reply to GERTRUDE W. Good answer? Yes (5) No (0)
A shopper asked: Is this product safe for Rosecea skin? Jun 24, 2012
Answer this · Send to friends Good question? Yes (8) No (0)
A shopper asked: Is it safe to use during breastfeeding? Mar 30, 2014
Answer this · Send to friends Good question? Yes (4) No (0)
A shopper asked: is it ok to use it with the dark spot corrector and midnight recovery or should i use this every other night and then use the two the other nights? Apr 19, 2012
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Donna W: My understanding is that the peel should be used by itself; leave it on overnight and then wash it off in the morning with a warm, damp face cloth. Apr 22, 2012
Reply to Donna Good answer? Yes (5) No (0)
Erin H: In order to maximize effectiveness of this product and decrease the risk of a sensitivity reaction, I would not suggest using this at the same time as other targeted solutions, like the dark spot corrector and midnight recovery. It is a better idea to use these alternately. Apr 20, 2012
Reply to Erin Good answer? Yes (2) No (0)
Irene G: They don't tell you if there is a right or wrong way to use this. I alternate with the peel and my moisturizers. Apr 19, 2012
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Norma S: I do not use the dark spot correcto
Thanks
Apr 19, 2012
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Gaby S asked: Do you put this on before or after moisturizer? Or do not put on moisturizer when you use this product? Jan 17, 2013
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Sarah G: No mouisturizer. As it's a peel I want it to do it's work. So I cleanse and put it on then sleep. When I wake up I just rinse it off and moisturize then. I use it about every other night and use my moisturizer on the other nights. Jan 17, 2013
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Amy S: II cleanse my face and apply the peel before bedtime. When I wake up, I cleanse my face again and be sure to moisturize. Great product! Jan 19, 2013
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GERTRUDE W. R: I would suggest using the peel alone (at night). Once you can gauge how much exfoliation occurs, then apply the moisturizer. My opinion is to use the peel at night and the moisturizer during the day. Upon obtaining the peel desired, only use the moisturizer (day and night). Mar 4, 2013
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A shopper asked: Are you supposed to shake before use? Oct 24, 2013
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Boya D: I didn't.
This product has not been making a significant change to my skin, perhaps you should shake it? I am oily skin with acne problem, this one kinda feel too heavy for me.
Oct 25, 2013
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linda z: Have used for yrs. Have never shaken. Oct 25, 2013
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A shopper asked: so I don't have to put any moisturizers, just this? May 2, 2012
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Mimi N: No moisturizer, only the peel. May 2, 2012
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Suzanne M: I never use a night time moisturizer. You may need one during the day depending your skin type. I always had soft skin. May 3, 2012
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A shopper asked: Is this good for acne prone skin? Dec 10, 2013
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Karlo E: I can only speak for myself but yes. It even helps accelerate the healing process of breakouts. Dec 11, 2013
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A shopper asked: Can this product be used instead of Retin A? Also is it safe to use while pregnant? Apr 7, 2012
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Nicole W asked: Does this product work like a facial masque? May 9, 2012
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Valorie H: Not exactly. It doesn't harden, and it's not something you have to peel off. In fact I leave it on and don't wash it off.
I love this product. It makes my skin firm, gets rid of uneven color and brown spots, and gives my complexion a glow.
I am 63 years old and I know by now there is no miracle in a bottle :-)
but this product does make my skin look great. And it doesn't have harmful chemicals in it.
I use it pretty much everyday.
I think you will like it and I hope it works for you.
xo xo
May 9, 2012
Reply to Valorie Good answer? Yes (3) No (0)
Valorie H: "Not exactly. It doesn't harden, and it's not something you have to peel off. In fact I leave it on and don't wash it off. I love this product. It makes my skin firm, gets rid of uneven color and brown spots, and gives my complexion a glow. I am 63 years old and I know by now there is no miracle in a bottle :-) but this product does make my skin look great. And it doesn't have harmful chemicals in it. I use it pretty much everyday. I think you will like it and I hope it works for you. xo xo" May 9, 2012
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Keri L: No. It works more like a night cream. I put it on after my cleansing routine each night and since the weather is warm now I don't feel that I need to put on additional night cream. Although, I have normal/combo skin, so for people with dry skin, night cream is probably still needed. I do avoid the eye area when using this and still put on eye cream. May 9, 2012
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Jiajun Z: No. It is a chemical peel that you put on your skin and then leave it on of the whole night. Next morning, you can wash it off. It is very gentle so you would not see result right the way. May 9, 2012
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AMBER M: a bit like a masque, but stays slightly sticky. it does give great results though May 9, 2012
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cara y: I can say it works like a serum. May 9, 2012
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A shopper asked: Do you put moisturizer on after using it? Mar 20, 2014
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Stacey V: I do not - this is a very concentrated product and I prefer to let it do its thing without "diluting" it with another product on top of it. A little bit goes a long way. I use about 4 pumps, rub together on my fingertips and that's enough for my whole face. It feels thick at first, but will eventually soak in. Mar 20, 2014
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Ariana B: No, you don't. You put it on and leave it on overnight. No moisturizer before or after, until the next morning when you wash it off. Mar 20, 2014
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Franck A: No need to do so
Just works fine by itself
Enjoy
Franck
Mar 23, 2014
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Warren W: The next morning I wash my face with facial fuel & moisturize Mar 21, 2014
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Ruigu T: No Mar 20, 2014
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A shopper asked: Can you wear a moisturizer with this? Apr 5, 2014
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Christine C: I apply it after my moisturizer every other evening. Love this product! Apr 5, 2014
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Barbara S: Yes but wait 30 minutes to put on the moisturizer Apr 5, 2014
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Dina M: yes, you can wear moisturizer with this. I do. Apr 17, 2014
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emily r: No. Apr 6, 2014
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Monica Perez asked: i have acne sequel (acne marks) in my face, will this treatment help my sken to get even? Mar 6, 2013
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Kimberly R: No. Although this product will gently remove the top layer of your skin, it will not penetrate deep enough to offer you an even tone that will erase those acne marks. Mar 6, 2013
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claudia c: Yes it help me with my acne my face felt soft and I did not have many problems after two weeks you will see the difference. Mar 6, 2013
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Richard S: I doubt it. I do not find it very helpful for anything. Mar 6, 2013
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nina c: Not at all Mar 6, 2013
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Sher R asked: how often do you recommend using this product and should your face peel or be flaky after use the following morning? Thanks Jul 14, 2012
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Mimi N: I don't have a frequency recommendation, except to follow the directions on the label and to pay attention to how your skin responds; I use this peel about once a week because I often use glycolic acid products at night, which are pretty strong.

No, your face should not peel or be flaky in the morning. When I wash the product off, my skin feels smooth and supple.
Jul 14, 2012
Reply to Mimi Good answer? Yes (1) No (0)
Luz G: I've never experienced flaking or peeling. That's probably a sign to use it less frequently? Or maybe even not at all, if it's irritating your skin. I've found this product to be gentle enough *for me* to use 3 times a week. I have very oily skin. Jul 14, 2012
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Youran K: I personally have used this product every other night and I have not had any issue with my skin being too try or flaky in the morning. However, I did not see any noticeable improvement. Jul 16, 2012
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Irene G: You should use a minimal amount two-three times a week. My face does not peel or flake. Jul 14, 2012
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A shopper asked: The peel does not dry on my skin, instead it leaves a sticky film. Is it because I used too much? How many pumps should you use? Mar 16, 2013
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kathy m: It is sticky, but I love it. My face does not feel sticky in the morning, and after I wash it it looks so refreshed!! I use 3-4 pumps nightly. Apr 11, 2013
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Shawna S: I only use one small pump, depending on how dry my skin feels every other night, and spread that amount over my neck and face. Apr 12, 2013
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Leesa T: this product remains sticky until removed. Apr 6, 2013
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Amber asked: When you apply this, does it soak into your skin or leave a sticky film on your face all night? If it leaves a film how do you avoid getting it on sheets/pillows? Jul 8, 2014
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Elyse G: it does not absorb in, nor does it leave a sticky film. I guess the best way to describe it is that it's like a moist dry. If you wait for about a half hour before you lay down you shouldn't have any problem. I love this product and I do notice a difference. Jul 8, 2014
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yolanda b: I don't think is is extra sticky. It is a bit thick but never left anything on my pillow. I usually rub it in pretty well and do not put a lot on. Jul 8, 2014
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A shopper asked: I have extremely dry skin...the flakey kind. I have used numerous peels and masks to try to rid myself of these embarrassing flakes, in addition to some of the most expensive moisturizers on the market. Will this peel help eliminate the flakes or make it worse? LeeAnn Jun 14, 2013
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Peishan (KC) C: The first week when u use it, it may show some effects. But after one week, nothing special would happen. N it's a bit sticky, so when u sleep, u may feel a bit uncomfortable. But everybody's skin is different. So this is just my own situation. I actually stop using it, n try other products. Jun 14, 2013
lea n: I didn't really like this product. I didn't notice anything different. Jun 14, 2013
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A shopper asked: can u use just under eyes? says not to get close to eyes but not sure if thats ok Jun 5, 2012
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Erin H: I would not use any "peel" (neither biological nor chemical) product on the under-eye area. The skin under the eye is much thinner and therefore more fragile and sensitive. If you're looking for a good under-eye anti-ageing product, you might try Line-Reducing Eye Brightening Concentrate or Midnight Recovery Eye. Jun 6, 2012
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Lara I M: I wouldn't put it above the cheek bone. Anywhere else is fine and it is an amazing product. Great results. Jun 5, 2012
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KP013 asked: Is this product okay to use with people with acne? Jun 15, 2014
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krista g: Yes. It's never affected my skin with breakouts. It's very gentle. Jun 15, 2014
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A shopper asked: First time I will use this product over night biological peel ..just want to know you just put this only at night? Jan 29, 2014
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Leesa T: I believe it is recommended to use at night, largely because it is most likely on the skin longer with good effect. I used during the day with less intense effect. Feb 2, 2014
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Victoria F asked: Do you use a moisturizer on top of this serum? Thank you for any input! Dec 2, 2013
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linda z: This is NOT a serum. You use overnt, then WASH OFF before moisturizing. Dec 31, 2013
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Maureen G asked: I am 55 years old. Use the Kiehls facewash then follow with the Midnight Recovery Concentrate. If I were to use the Over Night Biological Peel (3 times a week) would I still follow with the Recovery Concentrate and moisturizer or nothing else other than the peel? Oct 14, 2013
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rosetta m: I would still use both after. the peel seems to make your skin accept the moisturizer better. Oct 14, 2013
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A shopper asked: Can I put this on right after the microdermabrashion? Oct 2, 2013
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Lawrence W: Yes - especially since the microdermabrasion can irritate and dry the skin (depending on how long and forcibly you use the dermabrasion, what temperature the water is, etc) the Midnight Oil Concentrate helps the skin recover and remain moist afterward. Nov 25, 2013
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A shopper asked: How can i used this peel with my cc dark spot solution? May 22, 2013
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Angela W: The C.C. Dark Spot Solution should be applied after you use the toner and before you apply moisturizer or lotion. The Over-Night Biological Peel probably is best used as a stand-alone--AFTER you cleanse your face. The peel is to be worn over-night and then washed off in the morning. What I do: cleanse, toner, over-night peel. Since I only use the over-night peel once per week or two weeks, not using the C.C. Dark Spot Solution that one night is no big deal (especially since I use the dark spot solution twice daily). Jun 21, 2013
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A shopper asked: does this product contain my alcohol? May 2, 2013
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Jamy K: Not the form of ethyl any other significant amounts. If you are concerned about drying still continue to use your moisturizer after the treatment has had a chance to absorb. Remember to use sunscreen, you will become sensitive and do not use a facial scrub or AHA treatment within the next few days. May 2, 2013
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A shopper asked: Can you use with retin a? Apr 22, 2013
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Jamy K: Do not combine! Retin A is a prescribed topical medicine. It also works by sloughing off layers of the skin however at a much higher rate. Combining the 2 or even switching back and forth may cause inflammation along with frustration. I understand the desire to exfoliate, you may want to use a mild facial cleanser in the mornings that contains AHA or BHA along with a soft facial brush or pad using circular outward motions. always remember to hydrate and use suncreen. if your skin needs to calm down i do recommend the calendula/marigold toner that kielhs has. May 2, 2013
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Richard asked: I use benzoyl peroxide in my regiment due to my acne and i tend to break out whenever I don't use it at night. Is there a way of applying BP and then putting the over-night biological peel on? Mar 13, 2013
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Jamy K: I wouldn't recommend using both products at once as part of your nightly regimen, you may tend to over stimulate your oil/sebum production and then may lead to nice rosy patches where you didn't want to draw attention, your face. use the peel on clean skin, allow to absorb, follow with your moisturizer. think of it a a vacation day/night from your BP. If you're like me and experience oily skin I also recommend changing your pillow case frequently. I personally use cotton or linen and change them every 2 days so i'm not sleeping on the same surface. also my face cloth i change 3 times a week. May 2, 2013
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Janina asked: Would I be able to use your product or would it cause any reaction if use it with Retin A or Glycolic Acid?
Every so often I switch off to different treatments and I was given a bottle of Biological peel as a gift.
Thank you, JAM
Mar 4, 2013
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GERTRUDE W. R: Janina M. your question is a very good one. I can relate because I do the same - switch off to different treatments. I think Kiehls ONB Peel is very effective. It is not as harsh as Retin A but does create a good peel which allows exfoliation. Mar 4, 2013
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Laurie asked: does this help with crepy arm skin??? Feb 24, 2013
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Eddie S: No Apr 11, 2013
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donamarie M asked: Is it possible to try the Over-night Biological Peel on my sun-damaged arms? Also, I had used the hand cream called"Unusually Rich--But Not Greasy At All--Hand Cream, with SPF 10. Now, I cannot locate this at Kiehl"s at all. Jul 4, 2012
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Leesa T: I can't imagine doing any harm except to your wallet since the arms are a much bigger surface to cover than the face. it's a good product but no miracle for sun damaged skin. like many biological peel products, results largely disappear with continued sun exposure because they partially remove the uppermost layer of skin to reveal newer layers than can be more vulnerable to UV rays. Jul 6, 2012
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Mary W asked: What is the procedure to use the peel? Apply and leave on over night? Scrub it off? Just how does it work? Jun 16, 2012
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Daniel L: You apply and leave it on overnight. I usually do full coverage on my face. It doesn't dry like a mask which is good. So you still have the ability to eat etc without it feeling like it's dried up. Next morning, you just use a facial cleanser to remove it. After using it for a while, you'll notice some affected spots on your skin get better. Jun 16, 2012
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Camilla B asked: Does it help on acne scars? Jun 6, 2012
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Boya D: I bought this about a month ago, and continue using it for about 2 weeks. For me, it does not really help with my acne scars, and neither fit my skin type (oily combination), I still have pretty much a lot of problems with my skin. Jun 7, 2012
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Melissa asked: Does this product contain paragons? Jun 21, 2014
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Elizabeth S asked: Does this have BHA or AHA in it? May 30, 2014
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A shopper asked: Is this safe for women that are breastfeeding? May 14, 2014
Over-Night Biological Peel
Over-Night Biological Peel
Powerful Wrinkle Reducing Cream
Powerful Wrinkle Reducing Cream
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A shopper asked: Is this product safe for acne prone skin? I have some hyperpigmentation left over from acne whose appearance I would like to improve. I was wondering if this would help with those. Apr 12, 2014
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Jesse T asked: I received a couple samples of this peel. I used the entire sample pack on my face and found it to be sticky the whole night. Is that the recommended amount to be used each time? Just wanted to be sure before I buy a bottle of it. Jan 23, 2014
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A shopper asked: Can you use this if u have severe acne and post marks even though its start to heal? Jun 30, 2013
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A shopper asked: How do i use over-night biological peel? I have lots of scars from pimples and I just ordered dark spots corrector serum and wanna peel it off too. I think if i apply both.It would be better and faster. Feb 4, 2013
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A shopper asked: After you wash your skin when should you apply this, after the toner etc?... Oct 4, 2012
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A shopper asked: I have the sample of this but im wondering if its ok to use it after i use the dark spot corrector and midnight recovery? Apr 12, 2012
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We’re confident you will see healthier, revitalized skin in
28 days. Guaranteed or your money back.

Kiehl’s Skincare is scientifically formulated to restore and strengthen the skin barrier for healthier, younger-looking skin. Our targeted treatments are powerful, yet safe preparations which act to correct and treat your specific skin needs and concerns.