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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.

See Full List
Print

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

what it is

A Vitamin C serum that boosts radiance, helps firm skin and visibly diminishes fine lines, wrinkles and pores for smoother-looking skin. Formulated with 10.5% L-Ascorbic Acid and 2% Ascorbyl Glucoside plus Hyaluronic Acid, this patented, water-free concentrate is a Kiehl’s customer favorite.

what it’s good for

  • 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

key ingredients

Key Ingredients

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 skin aging. 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 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

This fast-absorbing form of Hyaluronic Acid is known for its ability to hold up to 1,000 times its weight in water. Acting like a sponge, it draws moisture into skin’s surface layers and expands as it absorbs. Hyaluronic Acid is known to help smooth and plump fine lines and is commonly used in skincare products intended to visibly reduce facial lines and refine texture.

SEE FULL INGREDIENT LIST

how to apply

  • Cleanse skin thoroughly prior to application
  • Apply Vitamin C serum over entire face, avoiding the eye area
  • As it blends into skin, you may experience a feeling of warmth as the formula activates
  • 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-aging formulas like our anti-aging face cream and nighttime facial oil

did you know?

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!

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

LEARN THE TRUTH ABOUT THE BENEFITS OF VITAMIN C FOR SKIN

learn more

Powerful-Strength Line-Reducing Concentrate is rated 4.5 out of 5 by 783.
Rated 5 out of 5 by from Loyal Fan I have been using PSLRC for almost 8 years now in conjunction with many other Kiehl's products. Ever since I began using Kiehl's, my skin has become smoother, calmer and breakout free. I believe consistency in using the products and patience is the key. I never thought I would have "good" skin. In the past, my skin was very oily and prone to embarrassing breakouts. Now, women ask me who my facialist is! I just tell them "Kiehls". I even feel confident not wearing foundation on lazy days. Never thought that would happen. Love letting PSLRC soak in before my next step of oil. The only negative I can say is not the product but the packaging. When it gets to the bottom of the bottle, the pump is no longer effective. I then need to scrape out the remainder which is a substantial amount - enough for 2+ weeks worth.
Date published: 2019-12-02
Rated 5 out of 5 by from No waste any drop! She is about to the end....but I won't let it go! LOL
Date published: 2019-11-30
Rated 5 out of 5 by from Beautiful product! Smells so good, is so light on the skin and absorbs so quickly. It’s the first time I have used a product and actually seen the results that they claim! It has reduced lines and my skin looks very bright and smooth. I alternate it’s use with Rosa Arctica (one one night and the other the next). The only thing I would say is that it marks my bedlinen yellow (comes out in the wash), but now that I have made sure to apply at least an hour before bed, that hasn’t happened anymore. I absolutely adore this product and will use for life.
Date published: 2019-11-27
Rated 1 out of 5 by from Warning - Stains Fabrics! Used this product for 3-4 weeks before realizing that it was the cause of mysterious orange stains on my pillow cases and shirt collars (that cannot be laundered out). I'm a big fan of many other Kiehl's products. But this one has ruined two sets of sheets and about a dozen dress shirts. Be warned...
Date published: 2019-11-25
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
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Is this product safe for use during pregnancy?

Asked by: SRYCG
Hi there! While every ingredient we use in our products is evaluated for safety, we do not specifically test our products on women who are pregnant or nursing. Kiehl's ensures there is a substantial information supporting the safety of our products when used as directed by consumers. However, as there could be certain ingredients that physicians may not recommend for use during pregnancy and nursing, we always recommend that you discuss this with your physician and follow their advice.
Answered by: KiehlsCCC
Date published: 2019-11-21

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

Asked by: Amers
Hi there! Our Powerful-Strength Line-Reducing Concentrate can absolutely be used with our Midnight Recovery Concentrate! Please make sure to apply the Powerful-Strength Line-Reducing Concentrate first before applying the oil. You will love the results!
Answered by: KiehlsCCC
Date published: 2019-11-21

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
You can put it on before your moisturizer. And if you use an oil as well put this on first , then the oil, then the moisturizer. I’d give it a minute to dry before applying the moisturizer.
Answered by: Michaeljarthur26
Date published: 2019-12-03
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