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Kiehl's Since 1851 Ultra Pure High-Potency 9.8% Glycolic Acid Serum #1
Kiehl's Since 1851 Ultra Pure High-Potency 9.8% Glycolic Acid Serum #1

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Kiehl's Since 1851Ultra Pure High-Potency 9.8% Glycolic Acid Serum

Item 2607984

4.6 out of 5 stars. 326 reviews
Size:1.0 oz


Kiehl's 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.



  • Free of fragrance and colorants, this concentrated serum is minimally formulated for skin absorption and smoothing effect

Key Ingredients

  • Glycolic Acid is 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

How To Use

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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