Bottled in this cream, Medik8's patented 'r-Retinoate®' technology is said to be 8x stronger than Retinol in its collagen stimulation, and 11x faster acting, too. The result? Fine lines appear diminished and skin looks plumped and luminous. The brand advises wearing sunscreen after a morning application as the Vitamin A may sensitize the complexion to harsh rays.