Wake up to deeply hydrated skin with H.E.O. Mask, a two-step overnight mask that takes a fundamentally scientific approach to long lasting moisturisation. The three key pillars of moisturisation: humectants, emollients and occlusives, are combined in an optimised ratio to replenish dry and dehydrated skin. H.E.O. Mask is clinically proven to deliver hydration and improve skin barrier function for up to 72 hours after use.* The appearance of dryness, dullness and fine lines and wrinkles are improved, so you can awaken to visibly plumper & glowing skin.