Onosma hispidum is a plant whose root extract is used in cosmetic formulations, traditionally valued for purported hair-growth, antioxidant, and conditioning properties. Evidence in dermatology is limited and largely based on traditional use and preliminary studies.
| Reported effect | How often | Notes |
|---|---|---|
Allergic contact dermatitis | Rare | Possible sensitization to botanical constituents, presenting as localized redness or itching. |
Skin irritation | Rare | Mild transient irritation reported with some plant-derived extracts, especially on sensitive skin. |
Photosensitivity | Very rare | Certain Boraginaceae-family plants contain naphthoquinones; theoretical concern but not well documented for this extract. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.