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Powerful-Strength Line-Reducing Concentrate

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

Powerful-Strength Line-Reducing Concentrate

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

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Total: $22.00 - $107.00

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Product details

Now formulated with even more Vitamin C, Dermatologist Solutions™ Powerful-Strength Line-Reducing Concentrate is infused with 10.5% L-Ascorbic Acid and 2% Ascorbyl Glucoside along with Hyaluronic Acid. Our new and improved formula helps reduce fine lines and wrinkles while improving skin’s texture and radiance.

  • Visibly reduces the appearance of fine lines and wrinkles, boosts skin radiance and improves texture
  • Helps visibly minimize pores over time for smoother skin
  • Formulated with a powerful 10.5% L-Ascorbic Acid, 2% Ascorbyl Glucoside along with Hyaluronic Acid
  • Demonstrated in a clinical study to decrease the appearance of fine lines and wrinkles and visibly improve skin radiance and texture
  • Demonstrated in a clinical study to decrease the appearance of deep-set wrinkles, forehead wrinkles and marionette lines after 4 weeks
  • Dermatologist-tested for safety
  • Carefully-formulated for all skin types, even sensitive skin
  • A customer favorite

*Results from an 8-week clinical study.

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.

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

Now formulated with even more Vitamin C, Dermatologist Solutions™ Powerful-Strength Line-Reducing Concentrate is infused with 10.5% L-Ascorbic Acid and 2% Ascorbyl Glucoside along with Hyaluronic Acid. Our new and improved formula helps reduce fine lines and wrinkles while improving skin’s texture and radiance.

  • Visibly reduces the appearance of fine lines and wrinkles, boosts skin radiance and improves texture
  • Helps visibly minimize pores over time for smoother skin
  • Formulated with a powerful 10.5% L-Ascorbic Acid, 2% Ascorbyl Glucoside along with Hyaluronic Acid
  • Demonstrated in a clinical study to decrease the appearance of fine lines and wrinkles and visibly improve skin radiance and texture
  • Demonstrated in a clinical study to decrease the appearance of deep-set wrinkles, forehead wrinkles and marionette lines after 4 weeks
  • Dermatologist-tested for safety
  • Carefully-formulated for all skin types, even sensitive skin
  • A customer favorite

*Results from an 8-week clinical study.

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.

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

How to apply
  • 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
  • Explore our other Vitamin C skincare products like Kiehl’s Powerful-Strength Line-Reducing Eye Brightening Concentrate

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 chemists stabilized 10.5% Pure Vitamin C in a water-free formula more than 13 years ago and became pioneers in Vitamin C skincare products. Now, our formula includes 12.5% Vitamin C and Hyaluronic Acid.

Powerful-Strength Line-Reducing Concentrate is rated 4.5 out of 5 by 623.
Rated 2 out of 5 by from Fourth bottle now - prefer the old formula I loved the velvety texture from the old formula, and I genuinely felt it made an impact on my fine lines. I am now in my early thirties and need more than just moisturizing, and this serum was what kept bringing me back to Kiehl’s. This new formula, as others have mentioned, feels sticky upon application and does not seem to affect my fine lines whatsoever. I have finished the large size of the new formula, and I am unimpressed and can’t say I will be purchasing another bottle.
Date published: 2019-05-09
Rated 3 out of 5 by from doesnt work underneath foundation I really like it on days I wear no makeup, as whenever I apply foundation after this and moisturiser it sort of starts to breakup my foundation. I’ve tried different techniques to make it work with my foundation but nothing worked. My foundation becomes really patchy n starts leaving like residue which is really visible. But love it for no makeup days!
Date published: 2019-05-02
Rated 5 out of 5 by from It works! I have never smoked but I have marionette lines. This powerful Line -reducing Concentrate seems to blur my lines and hydrates my skin. I use it morning and night under my moisturiser. I now can't live without it! Thank you KIEHL'S for this great product.
Date published: 2019-04-30
Rated 5 out of 5 by from Amazing! I’m hooked Got this in a sample form & once I tried it I knew I needed to have it in my life. It goes on a little oily but dries down to perfection, I feel younger after using this and I’ll be back for more! Thank you Kiehls for this magic product <3
Date published: 2019-04-28
Rated 2 out of 5 by from Less effective I've been using this Kiehl's formula for more than 5 years. It has always worked well but lately the product seems to turn orange quickly. I have really liked this product in the past but I'm concerned that it may not last as long or be as effective as before (i.e. thus the orange tint). Did the formula change result in decreased product longevity? Please fix it as I really value this product.
Date published: 2019-04-26
Rated 1 out of 5 by from Please bring back old formula Just purchased a new bottle after absolutely loving what this product has done for my skin however the formula has been changed and this is not at all the same product as before. I appreciate that you have increased the percentage of of vitamin c however that is not the game changer here. The old formula went on smooth and blended well into the skin without being oily. It had a slightly yellow color at first glance and seemed to be slightly tinted when applying to skin which was great. This also helped to enhance the “blurring” effect over fine lines which in my opinion was the primary reason I fel in love with the product. An unspecified sum of money later, the new formula is white/not tinted, leaves skin looking and feeling noticeably oily, and I hate to say feels as if I smeared generic body lotion on my face. There is absolutely no blur effect as before and the only noticeable difference after applying is that I look sweaty or greasy. I am sorry to leave a negative review however this is absolutely the one and only product that has made me a repeat customer. Unfortunately if the old formula is not brought back then I will sadly be on the hunt for an alternative. Sadly I do not think I will ever find a product equal in immediate visible benefits as your old formula. See photo for comparison of new formula v old formula.
Date published: 2019-04-20
Rated 5 out of 5 by from Results in a couple of days blown away ! Coming from someone who's tries and tests every new product and i always end up disappointed.. but this is a miracle in a bottle. My face is smoother brighter skin just looks so much better x
Date published: 2019-04-06
Rated 5 out of 5 by from dull skin is better I have just used the product for a few days but I get a good result. My face skin looks better. Like it! In addition, I really like an eye cream as one of the product sample that I got.
Date published: 2019-04-05
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how long does the 50ml bottle last?

Asked by: Swatcat
Hi there! Thank you for your interest in our Powerful-Strength Line-Reducing Concentrate. With regular use in the morning and at night, the 50mL bottle should last between 1.5-2.5 months.
Answered by: KiehlsCCC
Date published: 2019-04-30

Toner first?

Do I have to use toner first before applying this vitamin c serum? Or should I apply it first thing after washing my face?
Asked by: clearskin
Hi there! Thank you for your inquiry regarding our Powerful-Strength Line-Reducing Concentrate. Following a proper skincare regimen, after cleansing your face you should use toner before applying a serum. A toner helps balance the skins pH, but it is a personal preference. We hope this was helpful!
Answered by: KiehlsCCC
Date published: 2019-03-21

Can this be used twice a day?

Hi! Can this be part of my morning and nighttime routine? Thanks!
Asked by: Cdenise
Hi there! Thank you for reaching out about Powerful-Strength Line-Reducing Concentrate. Our new and improved formula helps reduce fine lines and wrinkles while improving skin&rsquo;s texture and radiance. Yes absolutely you can be used twice a day, morning and night. We hope you continue using Kiehl's with great satisfaction!
Answered by: KiehlsCCC
Date published: 2019-03-14

When do I apply?

I bought this and the midnight oil. For night time regimen-Do I apply the midnight oil, vitamin c and then my moisturizer? What about in the morning- would I apply vitamin c after cleansing and before moisturizer? Thank you
Asked by: Shirley
Hi there! Thank you for reaching out about our Midnight Recovery Concentrate and Powerful-Strength Line-Reducing Concentrate. Since the Powerful-Strength Line-Reducing Concentrate does contain Vitamin C, we do always suggest to apply that first after cleansing and wait for it to fully absorb. You can then follow it with your Midnight Recovery Concentrate and moisturizer. We hope this information was helpful and you continue to use our products with great satisfaction!
Answered by: KiehlsCCC
Date published: 2019-03-08

It okay to use it with Breakout Control Acne Treatment Facial Lotion?

I will be mainly using it to help me removing the dark spot and I'm currently using Breakout Control Acne Treatment Facial Lotion as a serum wondering if its going to conflict with Powerful-Strength Line-Reducing Concentrate, kindly advice.
Asked by: Alijuventus
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