As with most seaweeds, it’s a rich source of nutrients, and those benefit skin when applied topically. Among the benefits from applying brown algae to skin are antioxidant from its polyphenols, hydration from its polysaccharides, and soothing, thanks to a compound known as fucoidan.

In vitro (test tube) research has shown this type of algae plays a disruptive role in the pathway melanin (skin pigment) takes to make it to skin’s surface. In theory, topical use may keep discolorations at bay.

According to some studies, brown algae contains more antioxidants than red or green algae, but all of them, through their free radical scavenging ability, can delay or inhibit cellular harm.

See also:
Antioxidant