Castanea Sativa (Spanish Chestnut) Seed Extract is a plant-derived ingredient rich in polyphenols and tannins, used in skincare for its antioxidant and soothing properties. It is often included to help protect skin from oxidative stress and improve skin appearance.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation | Rare | Mild redness or stinging possible, particularly in sensitive skin or with higher tannin concentrations. |
Allergic contact dermatitis | Rare | Botanical extracts can occasionally provoke sensitization in predisposed individuals. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.