White Horehound (Marrubium vulgare) extract is a plant-derived ingredient used in skincare for its antioxidant, anti-inflammatory, and skin-conditioning properties, often attributed to compounds like marrubiin and phenolic acids. It is typically included to help calm and protect the skin.
| Reported effect | How often | Notes |
|---|---|---|
| Contact irritation (redness, stinging) | Uncommon | Possible in sensitive skin, especially at higher concentrations. |
| Allergic contact dermatitis | Rare | Botanical extracts can occasionally trigger sensitization in predisposed individuals. |
| Photosensitivity | Very rare | Limited evidence; not a well-documented effect for this extract. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.