Our remarkable vitamin A that can be used both day and night for faster visible brightening, revitalising and smoothing results while remaining gentle. This luxurious serum is powered by Medik8-exclusive encapsulated retinyl retinoate - proven to be 8x more powerful than standard retinol* in delivering age-defying benefits. The multi-step-in-one formula combines retinyl retinoate with stabilised vitamin C and hyaluronic acid for profound visible improvement in skin tone, texture and radiance. r-Retinoate Day & Night interlaces revolutionary science with a sublime sensorial experience that's highly tolerated by the most sensitive skin.