Pantolactone is a lactone derivative of pantothenic acid (provitamin B5) used in skincare as a moisturizing and skin-conditioning ingredient. It can serve as a precursor to panthenol and helps support skin hydration and barrier function.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation | Rare | Occasional transient redness or stinging, typically in sensitive skin. |
| Allergic contact dermatitis | Very rare | Isolated hypersensitivity reactions reported with pantothenic acid derivatives. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.