Kiehl's Since 1851

Ultra Pure High-Potency 9.8% Glycolic Acid Serum

4.60 (400)

Clean Ingredients
Vegan
Fragrance Free
Oil Free
Paraben Free
Silicone Free
Sulfate Free

Ingredient safety

Colors come from public regulatory sources. Every color has a word next to it.

7 ingredients on the label

4Low hazard
1Not enough data
2Moderate hazard
0High hazard

What reviewers said

Counted across 400 reviews

Liked

smoothing65
no irritation42
quick results37
hydrating33
brightening29
gentle27
glowy26

Not so much

no difference16
sticky15
drying6
harsh6
burning5
would not recommend4
thick texture3

Counted from shoppers' reviews on a retail site, not from our own users. These are shoppers' observations, not results from a clinical trial.

PERBETE reviews

From people who use PERBETE. Each review shows its own stars.

Ingredient groups

Tap a row to see which ingredients it counted.

Worth a look

High hazard (7-10)0

Not enough data yet0

Fragrance allergens the EU asks brands to label0

Ingredients with a cancer classification0

May help

UV protection0

Wrinkle care0

Brightening0

Only on PERBETE

A stronger form of this exists0

Clinical evidence

Being in the list and working are two different things. This is where we split them.

What the ingredients are for

Solvent2
pH adjuster1
Thickener1

Having these ingredients does not guarantee the product delivers the benefit.

By skin type

Every ingredient

Nothing is filtered out and nothing is hidden here.

1AquaLow hazard
2Glycolic acidModerate hazard
3GlycerolGlycerinLow hazard
4Alcohol Denat.Not enough data
5Sodium HydroxideListed below the 1% lineModerate hazard
6Sodium HyaluronateListed below the 1% lineLow hazard
7HydroxyethylcelluloseListed below the 1% lineLow hazard

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.

Red does not mean poison. Preservatives that stop a product going off, UV filters and fragrance can land on yellow or red depending on their score.

Green does not mean right for you. Skin and allergies differ from person to person. Treat the color as a starting point.