Leighton Denny Hydra Flex Serum is an intensely moisturising and nourishing treatment. The Serum is massaged into the nail and cuticle. It boosts moisture levels and leaves an invisible protective film to the nail surface. Composed of 9 Essential Oils and a compound of 7 active ingredients including Biotin, Liposomes and Rosehip Oil, hydrate and improve nail condition.