Nasturtium Officinale (watercress) Flower/Leaf Extract is a plant-derived ingredient rich in vitamin C, carotenoids, and glucosinolates, used in skincare for its antioxidant and brightening-supportive properties. It functions as a skin-conditioning agent and is often included for its purported soothing and protective effects.
| Reported effect | How often | Notes |
|---|---|---|
| Contact irritation (redness, stinging) | Rare | Generally well tolerated; mild irritation possible in sensitive individuals. |
| Allergic contact dermatitis | Rare | Botanical extracts can occasionally sensitize predisposed individuals. |
| Cross-reactivity in Brassicaceae-sensitive individuals | Very rare | Watercress belongs to the mustard/cabbage family; theoretical reactivity in those allergic to related plants. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.