*Usually £60 if bought direct from Medik8* Wake up to visibly plump, glowing and intensely hydrated skin with Medik8's two-step overnight treatment mask. H.E.O. Mask takes a fundamentally scientific approach to optimal maximum skin moisturisation to deliver clinically proven skin hydration, moisture retention and barrier support - both instantly and over time. The three key pillars of moisturisation - humectants, emollients and occlusives (H, E and O) - are combined in an expertly optimised ratio to dramatically improve the appearance of dryness, dullness, fine lines and wrinkles while you sleep. Your most supple-looking skin awaits.