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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: $84.00

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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. Hyaluronic Acid is known to help smooth and plump skin and is commonly used in products formulated to help reduce the appearance of facial lines and refine texture.

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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. Hyaluronic Acid is known to help smooth and plump skin and is commonly used in products formulated to help reduce the appearance of facial lines and refine texture.

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 611.
Rated 5 out of 5 by from excellent serum I got this as a sample because we are going on vacation and i was spending more time in the sun. I absolutely love the way my skin feels with just a little more the a pea size amount. it's warming when it goes on and soft. I already ordered more of it.
Date published: 2019-03-08
Rated 1 out of 5 by from Very disappointing I am a big lover of Kiehl's products and I so wanted to love this product as I do my other Kiehl's products but, after two months of consistent use, I have not notice any difference at all. Currently, I am 27 years old and am starting to have a few smile lines. I figured if this was able to be so helpful for older winkles, it should be able to help "fresher" wrinkles more easily but this has not been the case for me. My wrinkles are just as prominent as they were before starting this treatment. I will definitely be searching a new vitamin C product.
Date published: 2019-03-04
Rated 5 out of 5 by from I LOVE the way it feels I love this stuff. I have used the product for a month(?) and have no idea if it is visibly making a difference or not, but I know both vitamin C and hyaluronic acid are really good for my skin. And it feels so good!!! My skin feels so smooth. I do use moisturizer on top of it, plus a hydrating spray. I'm 66 and I need all the moisture I can get. My plan is to buy a bottle for my daughter on her birthday. She's turning 40 this year and we share a lot of skin products with each other.
Date published: 2019-03-01
Rated 1 out of 5 by from Has a warming effect This serum has a warming effect upon application. I applied it daily in the morning and every other night when I didn't use the spot corrector. Used for 6 months, but it didnt really even out my skin tone or brighten my face.
Date published: 2019-02-25
Rated 5 out of 5 by from Excellent I really love this product! It has an inmediet brightning effect. Great to use in the morning and look fresh and with a healthy skin. Its a pitty its so expensive!
Date published: 2019-02-21
Rated 5 out of 5 by from Amazing little helper Since adding this to my morning routine I’ve seen some really promising results and that’s only after a couple of weeks. [This review was collected as part of a promotion.]
Date published: 2019-02-17
Rated 5 out of 5 by from Very pleased come thru vitamin C! I received a sample of this and tried it. I love the smell and texture of this product. It absorbs very easily into the skin and just smooths out all over your face. The product is a bit pricey! but beauty comes with a price! lol
Date published: 2019-02-02
Rated 1 out of 5 by from Didn’t Work It made no difference to my wrinkles or my dry skin at all. I’m really disappointed after paying such a large sum of money for this product.
Date published: 2019-02-02
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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’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

Can you please advice me when you go back to original formula?

Your original was top notch. I would see almost immediate results,which was amazing. I do not know why companies always have to mess up a good thing. With the negative comments I have been reading & hearing lately, I will not be purchasing any time soon. You lost here a long time customer.
Asked by: imqt
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