Gluconolactone is a polyhydroxy acid that gently exfoliates the skin surface, provides antioxidant and humectant benefits, and is often considered milder than alpha hydroxy acids. It is well tolerated, including by sensitive skin, due to its larger molecular size and slower penetration.
| Reported effect | How often | Notes |
|---|---|---|
| Mild transient stinging or tingling | Common | Brief sensation on application, particularly at higher concentrations or on compromised skin. |
| Mild erythema (redness) | Uncommon | Usually temporary and resolves shortly after use. |
| Dryness or flaking | Uncommon | Related to its exfoliating action, more likely with frequent use. |
| Increased sun sensitivity | Uncommon | PHAs are generally less photosensitizing than AHAs, but sunscreen is still advised. |
| Allergic contact dermatitis | Rare | Hypersensitivity reactions are infrequently reported. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.