Beta-sitosterol is a plant-derived sterol used in skincare for its emollient, skin-barrier-supporting, and anti-inflammatory properties. It helps soothe irritation and may improve skin hydration and barrier repair.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation | Rare | Mild redness or stinging, typically in sensitive skin or at high concentrations. |
Allergic contact dermatitis | Very rare | Isolated case reports; phytosterols are generally considered low-allergenicity. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.