Acetic acid is a simple carboxylic acid (the active component of vinegar) used in skincare as a mild exfoliant, pH adjuster, and antimicrobial agent. At low concentrations it can help maintain skin acidity, while higher concentrations are used in chemical peels and antiseptic applications.
| Reported effect | How often | Notes |
|---|---|---|
| Skin irritation, stinging, or burning sensation | Common | More likely at higher concentrations or on broken/sensitive skin. |
| Erythema (redness) | Common | Typically transient following application. |
| Dryness or scaling | Uncommon | Associated with repeated or higher-concentration use. |
| Chemical burns | Rare | Reported with concentrated solutions or prolonged contact, particularly with undiluted vinegar use. |
| Allergic contact dermatitis | Rare | Sensitization is uncommon but documented. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.