The Zelens Youth Intelligence Age-Defying Serum is a pioneering formula inspired by Nobel prize-winning research to understand how the cells are affected by ageing. n Suitable for all skin types, the serum features an innovative blend of ingredients designed to combat the visible signs of skin ageing while promoting a youthful-looking radiance. Enriched with squalane and glycerin, the formula is ultra-hydrating as it helps to replenish the skins natural barrier with moisture. n A marine complex of eight types of fermented algae is designed to promote skin firmness and elasticity while hyaluronic acid helps to minimise the appearance of fine lines and wrinkles. n Dermatologist tested.