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Powerful-Strength Line-Reducing Concentrate

A potent Vitamin C serum formulated with 12.5% Vitamin C and Hyaluronic Acid.

Powerful-Strength Line-Reducing Concentrate

A potent Vitamin C serum formulated with 12.5% Vitamin C and Hyaluronic Acid.

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Total: $65.00

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Product details

Boost radiance, visibly firm skin and diminish the appearance of fine lines, wrinkles and pores with our customer-favorite Vitamin C serum. Formulated with 10.5% L-Ascorbic Acid and 2% Ascorbyl Glucoside plus Hyaluronic Acid, this patented, water-free concentrate helps improve skin’s appearance for radiant, younger-looking skin.

  • Helps visibly reduce lines and wrinkles while helping firm skin over time
  • Smoothes skin’s texture and helps visibly minimize the appearance of pores
  • Antioxidant Vitamin C penetrates skin’s deeper surface layers and remains effective in skin for up to 6 days
  • Provides visible results in just 2 weeks
  • Dermatologist-tested for safety
  • For all skin types, including sensitive skin
Key Ingredients
Vitamin C

Pure Vitamin C

L-Ascorbic Acid, also known as Pure Vitamin C, is a highly efficacious antioxidant known for its ability to improve the appearance of aging skin. In addition to antioxidant protection, Pure Vitamin C is known to help boost radiance, improve texture and visibly reduce the appearance of lines, wrinkles and other signs of aging.

Vitamin C

Vitamin Cg

Vitamin Cg, or Ascorbyl Glucoside, is a Vitamin C derivative that activates once absorbed into the upper layers of the skin’s surface. With antioxidant benefits, this form of Vitamin C is frequently used in anti-wrinkle skincare products to help reduce facial lines over time.

Fragmented Hyaluronic Acid

Fragmented Hyaluronic Acid

Hyaluronic Acid acts like a sponge to draw moisture into skin’s surface layers and then expands as it absorbs. Within our formulas, Hyaluronic Acid is known to help smooth and plump skin.

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Boost radiance, visibly firm skin and diminish the appearance of fine lines, wrinkles and pores with our customer-favorite Vitamin C serum. Formulated with 10.5% L-Ascorbic Acid and 2% Ascorbyl Glucoside plus Hyaluronic Acid, this patented, water-free concentrate helps improve skin’s appearance for radiant, younger-looking skin.

  • Helps visibly reduce lines and wrinkles while helping firm skin over time
  • Smoothes skin’s texture and helps visibly minimize the appearance of pores
  • Antioxidant Vitamin C penetrates skin’s deeper surface layers and remains effective in skin for up to 6 days
  • Provides visible results in just 2 weeks
  • Dermatologist-tested for safety
  • For all skin types, including sensitive skin
Print
Vitamin C

Pure Vitamin C

L-Ascorbic Acid, also known as Pure Vitamin C, is a highly efficacious antioxidant known for its ability to improve the appearance of aging skin. In addition to antioxidant protection, Pure Vitamin C is known to help boost radiance, improve texture and visibly reduce the appearance of lines, wrinkles and other signs of aging.

Vitamin C

Vitamin Cg

Vitamin Cg, or Ascorbyl Glucoside, is a Vitamin C derivative that activates once absorbed into the upper layers of the skin’s surface. With antioxidant benefits, this form of Vitamin C is frequently used in anti-wrinkle skincare products to help reduce facial lines over time.

Fragmented Hyaluronic Acid

Fragmented Hyaluronic Acid

Hyaluronic Acid acts like a sponge to draw moisture into skin’s surface layers and then expands as it absorbs. Within our formulas, Hyaluronic Acid is known to help smooth and plump skin.

See Full List

HOW TO APPLY A VITAMIN C SERUM

HOW TO APPLY A VITAMIN C SERUM
  • • Cleanse skin thoroughly prior to application
  • • Apply Vitamin C serum over entire face, avoiding the eye area
  • • As the it blends into skin, you may experience a feeling of warmth as the formula activates on skin
  • • Apply morning and night, after cleansing and toning and before your moisturizer
  • • Avoid the eye area; in case of contact with eyes, rinse them immediately
  • • Discover our other anti-wrinkle formulas like our anti-aging face cream and efficacious eye serum

results

After

After

Before

Before

IMMEDIATELY: Visibly Improved Skin Texture and Boosted Radiance

IN 2 WEEKS: Reduced Lines and Wrinkles

IN 4 WEEKS: Visibly Reduced Deep-Set Wrinkles

Results from an 8-week clinical study. Photos not retouched. Individual results may vary.

Immediate Week 2 Week 4 Week 8
Radiance checked checked checked checked
Decreased Facial Lines checked checked checked checked
Skin Texture checked checked checked checked
Decreased Deep-Set Wrinkles checked checked
Decreased Lip Lines checked checked
Improved Firmness checked
Visibly Reduced Pores checked
The Truth About Vitamin C Skin Care

The Truth About
Vitamin C Skin Care

learn more

HERITAGE HIGHLIGHT

HERITAGE HIGHLIGHT

Kiehl’s became pioneers in Vitamin C skincare when we first stabilized Vitamin C in our efficacious, water-free concentrate. Our patented Vitamin C serum is highly stable ensuring that our formula is concentrated with an efficacious amount of Vitamin C while still being suitable for sensitive skin. Within our formula, our Vitamin C penetrates skin’s deeper surface layers—up to 10 layers deep!

LEARN THE TRUTH ABOUT THE BENEFITS OF VITAMIN C FOR SKIN

Powerful-Strength Line-Reducing Concentrate is rated 4.5 out of 5 by 779.
Rated 5 out of 5 by from In love! I'm on my second bottle. My first bottle was last year and I fell in love with the texture and results. I'm in my early 40's. I don't have very visual wrinkles but I do like to take care of my skin before anything drastic happens. I love the way it left my skin after weeks of use. My skin did looked more youthful. The pours minimized and it toned my skin. My comments/question is and I would like a reply back on this, the texture on the first bottle was a little raspy. When gliding through my skin it felt like a scrub feel. I didn't mind it at all. It left my skin super smooth. But on this second bottle I just bought last week, the raspy texture is not there anymore. What changed? Will it affect the outcome of this product? My skin in normal, a little dry in the winter. The serum does not leave my face oily or shiny. It absorbs quickly. I do use a gentle scrub so maybe you should add that to your routine in order for this product to work the way it should. I love this product and I wish it was a bit less expensive but I will continue to use.
Date published: 2019-11-14
Rated 5 out of 5 by from Wonderful ! Totally in love with it ! This is the most lovely product that I have used ! I will use it for my whole life . I love the texture , the smell and the effects over all. It works great on my skin , left a good feeling on it . I use it 2 times a day and it absolutely has changed my skin , it's soft like a baby skin . The price is unconsidered with the effects . Definitely worth the price and definitely is the best product followed by Ultra Facial Cream . Thank you Kiehl's . I love all the products !
Date published: 2019-11-13
Rated 1 out of 5 by from Will not repurchase I really should’ve tried a sample of this first. It has a silicone feeling on application and is hard to apply. It has no brightening effect whatsoever, in fact it’s so matte it makes me look worse. I appreciate these serums need to be used consistently for a long period of time to see any effect but this is joyless to use. Plus it’s expensive.
Date published: 2019-11-01
Rated 5 out of 5 by from Did you get botox!!! I used Too much of sample of this product. Its a bit deceiving as it looks like a cream but its consistency is more oily- going a long way. Because i used too much by how it came out, i waited to go to bed- not wanting to stain my pillow. At work the next day my coworker made me “ wrinkle my forehead “ to prove i hadnt received botox. The effects of this product were so good. I ordered it and am using it now. I still use it generously and let it sit for 1-2 hours before going to bed. I have dry skin& am in my 50’s and need it generously. Love the warming sensation when putting it on. It a ts like a mask that you dont wash off. It will be completely absorbed in the morning.
Date published: 2019-10-20
Rated 1 out of 5 by from Causes breakouts I rarely write reviews but after using this product I felt it necessary as this product was such a waste of money. I never have breakouts or get spots but after using this serum I had several breakouts & spots which were very irritated & inflamed. I really liked how the serum felt and think it instantly smooths lines, only temporarily, and it feels good on the skin during application. However, after about one week of using this product, I begun to notice breakouts happening in places where this product was applied. I stopped using the product for a while and as soon as I used it again after a break of 2 weeks I had the same breakouts again. I will not use this product anymore, nor will I recommend it to anyone. Steer clear of it.
Date published: 2019-10-13
Rated 5 out of 5 by from Noticeable Difference This is the first skincare product where i have actually seen a difference in my skin after using. The product is quite a unique texture and i did get the warming sensation it mentions on this page, but after a few days I had a comment from a colleague and i actually skipped foundation.. my skin just looks a lot less dull and a lot more even, and my fine line on my forehead has really noticeably improved!! very happy with this plus the aqua gel suncream that i also bought
Date published: 2019-10-09
Rated 5 out of 5 by from amazing! I honestly cant live without this stuff! for years I've tried everything and spent so much money on skincare and this is the only one I see results with. I have a deep wrinkle in the middle between my eyes and this literally smooths it out so much and people comment on how nice my skin is. I dont wear foundation anymore because I dont need too. if this stuff ever stopped, I dont know what I'd do!
Date published: 2019-10-04
Rated 3 out of 5 by from Acne scars Young black woman with hyperpigmentation: I bought this because it contains vitamin C, which I was told (by the salesperson) would lighten my acne scars, even though that's not how it is marketed. Having used it for a month now, I can say that whilst my skin definitely looks brighter overall, it hasn't done much for my scars.
Date published: 2019-09-27
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Is this product safe for use during pregnancy?

Asked by: SRYCG

Can this be used with the midnight recovery oil? If so in what order?

Asked by: Amers

Can this be used with Clearly Corrective Brightening & Smoothing Moisture Treatment

Can I use this with the Clearly Corrective Brightening & Smoothing Moisture Treatment?
Asked by: Titan
Hi there! Yes, this can be used along with the Clearly Corrective Brightening & Smoothing Moisture Treatment. We hope you can give it a try!
Answered by: KiehlsCCC
Date published: 2019-11-12

Is this product suitable for man use also? ( was recomndad ro me in London Kielhs store)

Asked by: Ggg123
Yes, this product is suitable for use on men and women. This product helps visibly reduce lines and wrinkles while helping firm skin over time. It also smoothes skin’s texture and helps visibly minimize the appearance of pores. We hope you can give it a try!
Answered by: KiehlsCCC
Date published: 2019-11-07

How to use this product?

I have seen someone already asked this question but it has not bee answered properly. On you website there is an information about product itself but not about application. Should it be used on the top of the cream or how? Thanks
Asked by: Katarina35
HI there! Please follow these steps for product application: STEP 1: Cleanse skin thoroughly prior to application STEP 2: Apply Vitamin C serum over entire face, avoiding the eye area STEP 3: As the formula blends into skin, you may experience a feeling of warmth TIP: Can be used twice a day, morning and night We hope this information is helpful!
Answered by: KiehlsCCC
Date published: 2019-11-01
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