PRO (commonly referring to provitamin B5, panthenol) is a humectant and skin-conditioning ingredient that attracts and retains moisture while supporting the skin barrier. It is frequently used to improve hydration, soothe irritation, and enhance wound healing in topical formulations.
| Reported effect | How often | Notes |
|---|---|---|
Mild transient stinging or burning on application | Uncommon | Usually self-limiting, more likely on compromised or sensitive skin. |
Allergic contact dermatitis | Rare | Documented in case reports; presents as redness, itching, or eczematous reaction. |
Skin redness or irritation | Rare | Generally well tolerated; irritation is infrequent. |
Contact urticaria | Very rare | Isolated reports of hives following topical exposure. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.