Glycolic acid is an alpha-hydroxy acid that exfoliates by loosening the bonds between corneocytes in the outer skin layer, promoting cell turnover and improving texture, tone, and fine lines. At 5% it is a mild concentration suited to daily or regular topical use.
| Reported effect | How often | Notes |
|---|---|---|
Mild stinging or tingling | Common | Transient sensation shortly after application, especially on sensitive skin. |
Erythema (redness) | Common | Usually mild and temporary, more likely with frequent use. |
Dryness or flaking | Common | Result of increased exfoliation; manageable with moisturizer. |
Increased photosensitivity | Common | AHAs can heighten UV sensitivity; daily sunscreen is recommended. |
Irritation or contact dermatitis | Uncommon | More likely with overuse, layering with other actives, or compromised skin barrier. |
Post-inflammatory hyperpigmentation | Rare | More common in darker skin tones, particularly with irritation or sun exposure. |
Chemical burn or blistering | Very rare | Associated with misuse, prolonged contact, or improperly formulated products. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.