Vitamin B5 (panthenol) is a humectant and skin-conditioning agent that supports barrier function and hydration, while Vitamin E (tocopherol) is a lipid-soluble antioxidant that protects skin lipids from oxidative damage. Together they are commonly used to moisturize, soothe, and stabilize formulations.
| Reported effect | How often | Notes |
|---|---|---|
Contact dermatitis / skin irritation | Uncommon | Mild redness or itching, more often associated with tocopherol in sensitive individuals. |
Allergic contact sensitization | Rare | Vitamin E (tocopherol/tocopheryl acetate) is a recognized but infrequent contact allergen. |
Panthenol allergic reaction | Very rare | Isolated case reports of allergy to panthenol. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.