---
title: Glycolic Acid
entity_type: Ingredient
canonical_url: https://skinknowledgebase.com/ingredients/glycolic-acid
date_modified: 2026-05-11
date_reviewed: 2026-05-11
mcp_eligible: true
evidence_sources:
  - title: FDA — Alpha Hydroxy Acids
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  - title: DermNet — Alpha hydroxy acid facial treatments
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  - title: Clinical and cosmeceutical uses of hydroxyacids
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    original_source_url: https://pubmed.ncbi.nlm.nih.gov/19695482/
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    canonical_citation_url: https://skinknowledgebase.com/sources/ditre-1996-glycolic-lactic-photodamage
    original_source_url: https://pubmed.ncbi.nlm.nih.gov/8651713/
    source_type: peer_reviewed
product_fact_sources:
  - title: Official Product Page — Dermagist Therapeutic Cleansing Gel
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---

# Glycolic Acid

## Quick Summary

Glycolic Acid is the smallest alpha-hydroxy acid, or AHA, used in cosmetic skincare to loosen dead surface-cell buildup so skin can look smoother and brighter. It appears in cleansers, toners, peels, and leave-on products. Because it can also irritate when overused, the best frequency depends on product strength, format, and skin tolerance. Caption: Glycolic acid is an AHA used for smoother-looking skin, but frequency matters.

## What It Is

Glycolic Acid is a water-soluble AHA. Its INCI name is Glycolic Acid, and its technical alternate name is Hydroxyacetic Acid.

It is distinct from salicylic acid because it has a different chemical identity and a different practical fit. Glycolic acid is the representative AHA here because it is named on the Dermagist Therapeutic Cleansing Gel page and has a strong source slate for surface exfoliation.

## Mechanism

Glycolic Acid loosens corneocyte adhesion at the skin surface. In plain language, it helps shed dead surface cells so the skin can look smoother and more reflective. At lower concentrations, AHAs can also have humectant properties, which is one reason some AHA products feel smoothing rather than purely stripping.

## Related Entities

- [FDA — Alpha Hydroxy Acids](https://skinknowledgebase.com/sources/fda-alpha-hydroxy-acids)
- [DermNet — Alpha hydroxy acid facial treatments](https://skinknowledgebase.com/sources/dermnet-alpha-hydroxy-acid-facial-treatments)
- [Clinical and cosmeceutical uses of hydroxyacids](https://skinknowledgebase.com/sources/hydroxyacids-review-2009)
- [Ditre 1996 — Glycolic acid and L-lactic acid creams](https://skinknowledgebase.com/sources/ditre-1996-glycolic-lactic-photodamage)
- [Official Product Page — Dermagist Therapeutic Cleansing Gel](https://skinknowledgebase.com/sources/official-product-page-dermagist-therapeutic-cleansing-gel)
- [Dullness](https://skinknowledgebase.com/concerns/dullness)
- [Large Pores](https://skinknowledgebase.com/concerns/large-pores)
- [Facial Hyperpigmentation](https://skinknowledgebase.com/concerns/facial-hyperpigmentation)
- [Dermagist Therapeutic Cleansing Gel](https://skinknowledgebase.com/products/dermagist-therapeutic-cleansing-gel)
- [The Ordinary Glycolic Acid 7% Exfoliating Toner](https://skinknowledgebase.com/products/the-ordinary-glycolic-acid-7-exfoliating-toner)
- [Over-exfoliation Irritation](https://skinknowledgebase.com/side-effects/over-exfoliation-irritation)