In human clinical trials, the Seaweed fucus vesiculosus blåstång extract reduced wrinkle depth and improved overall skin appearance. Clinical trials confirmed that this extract increase moisture retention following UV exposure. The seaweed ascophyllom nodosum knöltång extract was also shown to reduce redness after UV exposure, as well as activate key genes associated with wound healting. These clinical findings corroborate in vitro tests, which have confirmed that this extract is a potent inhibitor of key enzymes responsible for skin damage encluding collagenese, tyrosinase och elastase.