The building blocks of proteins, amino acids, are essential for almost all of the skin’s functions. There is no way skin can function without them. They help hydrate, repair, provide antioxidant protection, boost UV protection and smooth out texture.

There are hundreds of amino acids, but some of the ones to be on the lookout for in skincare products include: arginine (improves skin’s ability to heal); lysine (hydrates the skin); glycine (restores collagen synthesis after UV exposure); and hydroxyproline (collagen’s own star amino acid!).