Dioscorea Japonica (Japanese yam) root extract is a plant-derived ingredient used in skincare for its moisturizing, antioxidant, and skin-conditioning properties, attributed to constituents such as polysaccharides, diosgenin, and mucilage. It is commonly included to support skin hydration and soothing.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation (mild redness or stinging) | Rare | Occasional sensitivity reported, generally in those with reactive skin. |
Allergic contact dermatitis | Very rare | Botanical extracts can rarely sensitize individuals predisposed to plant allergies. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.