H.E.O.® MaskWake 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