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Kiehl's Since 1851 Ultra Pure High-Potency 9.8% Glycolic Acid Serum
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Highlights
Summary
The Kiehl's Since 1851 Ultra Pure High-Potency 9.8% Glycolic Acid Serum is a concentrated facial serum formulated with just seven ingredients to help step up your smooth by visibly refining skin's texture and minimizing the appearance of pores.
Benefits
- Free of fragrance and colorants, this concentrated serum is minimally formulated for skin absorption and smoothing effect
Key Ingredients
- Glycolic Acid: a naturally occurring fruit acid derived from sugar cane known to help smooth skin
Research Results
- After 1 Week, 98% Agree Skin Feels Softer* Instantly, 83% Felt Refined Texture* Smoother Skin in 1 Week**
- *Reported by consumers in a 4-week study **Expert grading in a 4-week clinical study
Item 2607984
In the evening, apply 2 - 3 drops to clean, dry skin.
Try out Kiehl's Glycolic Acid serum skin hacks: Zone treat your face by applying Glycolic Acid Serum to areas prone to roughness. Follow with your favorite moisturizer where needed. Use as an exfoliating treatment for cracked heels. Layer with Kiehl's Hyaluronic Acid Serum to hydrate & rebalance skin's moisture. Layer with Kiehl's Niacinamide Serum to to reduce oil & sooth skin.
Aqua/Water, Glycolic Acid, Glycerin, Alcohol Denat., Sodium Hydroxide, Sodium Hyaluronate, Hydroxyethylcellulose.
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Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Most Helpful Positive Review
Not for sensitive skin ...
Upon receiving this complimentary product, I was super excited to finally get a chance to try a Kiehl's brand product. The Kiehl's Ultra-Pure High Potency Serum 9.8% Glycolic Acid arrived in a semi-sturdy red and white branded package with black lettering. The serum is enclosed in a small glass bott...
Most Helpful Critical Review
Good ingredients but didn't work well for me personally
This is the second Kiehl's product I've tried and wanted to love but just didn't have success with. The ingredients are simple, the packaging is understated and clean, and the serum is clear and watery, so in theory I should have been able to layer it under my moisturizer. For me, the product was ve...
400 results
Love this stuff ❤️
Submitted as part of a free sample program
Reviewed at
I wanted to use this for a week or 2 before reviewing to give my honest opinion. I tend to have a dry red face and nothing really helps ease the redness! After using the redness has calmed down a ton and my skin is very soft. On top of all the other benefits it has, I love it! You don't need much so a little goes a long way. I guarantee anyone who uses this will love it!
love kiehls
Submitted as part of a free sample program
Reviewed at
such an amazing brand I've loved everything that I've tried ! this item fit in my skin care routine so easily and I seen results quickly and effectively
Great product
Submitted as part of a free sample program
Reviewed at
This Kiehl's serum was great on my skin. The glycolic acid did not burn or leave my face dry. It helped clear up acne on my chin. I did not notice any changes in the discoloration and dark spots on my face, but have only been using it for a couple weeks. I am excited to see how it continues to improve my skin as I keep using it.
Pretty good serum
Submitted as part of a free sample program
Reviewed at
I got this product for free to review and I must say it definitely feel like a high quality serum. Doesn't get too sticky and coverage is nice. A little goes a long way. I have been using it for about 2 weeks and I can't really tell if my skin feels smoother or not, but I plan to keep using it and will figure that out. I looked up the price and am not sure if I would pay that much for this product, but it would definitely be a nice and high quality gift.
Smooth Serum
Submitted as part of a free sample program
Reviewed at
I have tried a couple of products from Kiehl's and have always been impressed - they clearly produce high quality products. I have used this serum every night for a couple of weeks and I haven't seen a noticeable difference in the texture of my skin, but I am going to keep using it to see if it just needs more time. I tend to have sensitive skin but this serum does not cause me to have any breakouts or dryness like what I've experienced with other serums I've tried. I appreciate that it truly has no scent whatsoever. I also love how light it is - it isn't sticky at all like most other serums I've used. A little bit goes a long way, so the bottle will last you longer than you might think.

