Lactobionic acid is a polyhydroxy acid that gently exfoliates, hydrates by attracting water, and provides antioxidant and metal-chelating activity. At a low concentration of 100 ppm it acts as a mild supportive active rather than a strong exfoliant.
| Reported effect | How often | Notes |
|---|---|---|
Mild transient stinging or tingling on application | Uncommon | PHAs are generally better tolerated than AHAs; low concentration further reduces likelihood. |
Skin irritation or redness | Rare | More likely on compromised or sensitive skin. |
Dryness or peeling | Rare | Unlikely at 100 ppm, more associated with higher acid concentrations. |
Allergic contact dermatitis | Very rare | Isolated sensitivity reactions reported. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.