Piel

Glycolic Acid

INCI name: Glycolic Acid

Glycolic Acid is classed in the EU CosIng database as pH buffering. Piel groups it with exfoliating acids.

What it does

How Piel groups it

Piel's knowledge base files Glycolic Acid under:

Piel's note

The smallest of the alpha-hydroxy acids, which is why it penetrates readily. It is commonly used for surface texture and tone, and it increases sun sensitivity while a routine includes it.

Pairs to be careful with

Piel's routine check flags Glycolic Acid next to:

Found in 1,670 products in Piel's catalogue.

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Identifiers

INCI name
Glycolic Acid
CAS number
79-14-1
EC number
201-180-5
CosIng reference
34147

Data from Piel's records, September 19, 2026