Undaria Pinnatifida (Wakame) Extract is a brown seaweed (algae) extract used in skincare for its antioxidant, soothing, and skin-conditioning properties, owing to its content of polysaccharides, minerals, vitamins, and fucoidan. It is valued for moisturizing and supporting skin barrier function.
| Reported effect | How often | Notes |
|---|---|---|
| Contact irritation | Rare | Mild redness or stinging possible, typically in sensitive skin or at higher concentrations. |
| Allergic contact dermatitis | Rare | Hypersensitivity reactions to marine/algae components reported infrequently. |
| Iodine sensitivity reaction | Very rare | Seaweed extracts contain iodine, which may rarely concern individuals with iodine allergy or thyroid sensitivities. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.