Brown algae extract (derived from seaweeds such as Fucus, Laminaria, and Sargassum) is rich in polysaccharides, polyphenols, and minerals that provide antioxidant, hydrating, and skin-conditioning benefits. It is used in skincare for its moisturizing and protective properties against oxidative and environmental stress.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation | Uncommon | Mild redness or stinging, more likely on sensitive skin. |
Allergic contact dermatitis | Rare | Sensitization to algae components or co-formulated preservatives. |
Iodine sensitivity reactions | Rare | Brown algae naturally contain iodine; relevant for iodine-sensitive individuals. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.