Glycolic Acid ●
TL;DR. This ingredient is primarily used as a chemical exfoliant and pH-adjusting acid, helping loosen surface-cell buildup for smoother texture and brighter-looking skin. It is most common in leave-on toners, serums, masks, cleansers, and professional peel products.
What does Glycolic Acid do in a cosmetic formula?
This ingredient is primarily used as a chemical exfoliant and pH-adjusting acid, helping loosen surface-cell buildup for smoother texture and brighter-looking skin. It is most common in leave-on toners, serums, masks, cleansers, and professional peel products.
Is Glycolic Acid clean?
From a clean-beauty perspective, it is widely accepted but not friction-free because performance and tolerance depend strongly on concentration, pH, contact time, and skin condition. It can cause stinging, redness, or barrier stress at higher strengths, so responsible formulation matters more than the ingredient’s presence alone.
Is Glycolic Acid sustainable?
This material can be made from plant-derived carbohydrate feedstocks or synthetic petrochemical routes, so sourcing varies by supplier. It is water-soluble and readily biodegradable, with low persistence concerns in rinse-off and leave-on use patterns.
Is Glycolic Acid COSMOS-approved?
It can be compatible with COSMOS-natural formulations when produced and processed through allowed routes, while COSMOS-organic status depends on the feedstock and the finished formula. Its Green Chemistry profile is stronger when bio-based feedstocks, efficient aqueous processing, and biodegradable end fate are documented.
How does Glycolic Acid work chemically?
The molecule is the smallest alpha-hydroxy acid, with one carboxylic acid group and one hydroxyl group, giving high water solubility and strong pH-dependent exfoliating activity. Typical cosmetic use is about 3% to 10% in leave-on products, higher in controlled professional peels, with activity increasing below pH 4 and a pKa around 3.8.
Last updated 2026-05-13