10-Hydroxydecanoic acid is a medium-chain hydroxy fatty acid (a component of royal jelly) used in skincare for its skin-conditioning and reported sebum-modulating and soothing properties. It is sometimes included in formulations targeting oily or acne-prone skin.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or transient redness | Uncommon | Generally mild and self-limiting, more likely at higher concentrations. |
| Contact dermatitis / allergic sensitization | Rare | Possible in individuals sensitized to bee-derived products such as royal jelly. |
| Stinging or itching on application | Rare | Typically transient and concentration-dependent. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.