Skin-care brand Algenist gets its name after its primary ingredient: alguronic acid. Made from sustainably-produced algae extract, the brand claims that alguronic acid brightens and firms the skin, while also minimising the appearance of wrinkles. The new Algenist AA Barrier Serum (£80), which launches August 13th at Space NK, contains the highest concentration of alugornic acid the brand has ever used in a product, as well as niacinimide, pholoretin (an antioxidant from green apple), and ergothioneine (an antioxidant from mushrooms), which, when combined, promise to smooth, calm, and hydrate the skin, as well as protect your delicate complexion from harmful, wrinkle-causing, glow-reducing free radicals.