Lactic Acid
Also known as: AHA (milk-derived)
INCI: Lactic Acid | Function: Exfoliant / Humectant | Type: Alpha hydroxy acid
What Is Lactic Acid?
Lactic Acid is a larger AHA molecule than Glycolic Acid, providing gentler exfoliation while simultaneously hydrating the skin.
Key Skin Benefits
- + Gentle exfoliation
- + Hydrates while exfoliating
- + Fades pigmentation
Pros
- + Gentler than Glycolic Acid
- + Dual-action
Cons
- − Slower results
- − Can feel sticky
Specifications
| Property | Value |
|---|
| Usage Areas | Face, Body |
| Product Type | Leave-On, Rinse-Off |
| Source | Plant-derived (fermented) |
| Natural Level | Natural-derived |
Safety Ratings
| Metric | Rating |
|---|
| Skin Sensitivity | 2/5 |
| Comedogenic Rating | 0/5 |
| EWG Score | 1/10 |
Regional Regulatory Limits
| Region | Leave-on % | Rinse-off % | Status |
|---|
| EU (CosIng) | Up to 10% (pH>3) | No limit | Allowed |
Typical Usage % by Product Type
| Product Type | Typical % |
|---|
| Toner | 5 - 10% |
References
- CIR (2021) — AHA Safety. PMID: 34492222