Glycolic Acid
Also known as: AHA
INCI: Glycolic Acid | Function: Exfoliant | Type: Alpha hydroxy acid (smallest AHA)
What Is Glycolic Acid?
Glycolic Acid is the smallest AHA molecule for deepest penetration. Exfoliates surface, stimulates collagen, fades hyperpigmentation.
Key Skin Benefits
- + Deep exfoliation
- + Collagen stimulation
- + Fades pigmentation
Pros
- + Most effective AHA
- + Fastest results
Cons
- − Can sting/irritate
- − Photosensitivity
Specifications
| Property | Value |
|---|
| Usage Areas | Face, Body |
| Product Type | Leave-On, Rinse-Off |
| Source | Synthetic (or plant-derived from sugarcane) |
| Natural Level | Semi-synthetic |
Safety Ratings
| Metric | Rating |
|---|
| Skin Sensitivity | 3/5 |
| Comedogenic Rating | 0/5 |
| EWG Score | 2/10 |
Regional Regulatory Limits
| Region | Leave-on % | Rinse-off % | Status |
|---|
| EU (CosIng) | Up to 10% (pH>3) | No limit | Restricted |
Typical Usage % by Product Type
| Product Type | Typical % |
|---|
| Toner | 5 - 10% |
References
- CIR (2021) — AHA Safety. PMID: 34492222