Moisturisers, Exfoliators & Masks, Exfoliators

H.E.O.® Mask

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. Key Benefits Clinically Proven Skin Hydration Expertly designed to deliver and retain intense hydration for 72 hours post use.* Overnight Line-Smoothing Results Visibly improves the look of fine lines and wrinkles as well as flaking, dryness and crepiness. Clinically Proven Barrier Support Provides clinically proven skin barrier to prevent TEWL (transepidermal water loss - moisture loss through the skin barrier). Professional-Grade Treatment H.E.O. Mask is used within professional treatments across the globe to deliver both soothing and visible age-defying results. Proven Results BEFORE AFTER 1 USE BEFORE AFTER 1 USE 72 hours of skin hydration & moisture retention* 72 hours of skin barrier support* 1 use to improved skin barrier function* 94% showed a clinical improvement to moisturisation levels* 94% agreed skin appeared glowing after use* *Proven via independent clinical study on H.E.O. Mask. Tested on 35 participants over 4 weeks. | Please Note: Product packaging shown may be different to the product received due to regional variations. How to Use First-time use If you're new to H.E.O Mask, we recommend a patch test at least 24 hours before first use. Learn how to patch test here . Step 1 After cleansing, apply as the last step of your evening skincare routine. Step 2 Smooth an almond-sized amount of Step 1 of H.E.O. Mask over face, neck and décolletage - avoiding the eye area. Allow to absorb. Step 3 Then gently massage another almond-sized amount of Step 2 of H.E.O. Mask into the same areas. Leave on overnight. Step 4 Apply 2-3 times a week or as required. Uses per tube 50 Guide to Layering Step 1: Cleanse Micellar Mousse™ Full Size (150ml) Add to Bag £25 Step 2: Renew Crystal Retinal® Select a Strength Recommended: Crystal Retinal 6 Crystal Retinal 1 Crystal Retinal 3 Recommended: Crystal Retinal 6 Crystal Retinal 10 Crystal Retinal 20 Crystal Retinal 24 Add to Bag £69 Step 3: Moisturise H.E.O.® Mask Full Size (50 ml x 2) Add to Bag £60 Key Ingredients Multi-Weight Hyaluronic Acid H.E.O. Mask uses multiple molecular weights of hyaluronic acid (small, medium and large), to distribute deep hydration evenly throughout the skin's many layers. This leaves the complexion visibly nourished and supple. Natural Moisturising Factors (NMFs) A unique combination of natural components in your skin (sodium PCA, glycerin, urea, proteins, sugars, 15 different amino acids, lactic acid, and creatine) which bind and hold moisture for optimal skin hydration. Ceramides Naturally found in the skin barrier, ceramides work by mimicking the natural lipid barrier to intensely replenish and nourish the complexion. Squalane An almost skin-identical lipid which helps to support the natural skin barrier by nourishing the complexion. Ceramides Naturally found in the skin barrier, ceramides work by mimicking the natural lipid barrier to intensely replenish and nourish the complexion. Squalane An almost skin-identical lipid which helps to support the natural skin barrier by nourishing the complexion. Glycerin A natural humectant which traps moisture within the skin to leave it hydrated and comfortable. See More View all Clinically proven formula Dermatologically tested Non-comedogenic (won't clog pores) Fragrance free No synthetic colours Paraben free Certified by the vegan society Experts Recommended "Delivers impressive visible results and a moment of self-care." DANIEL ISAACS Chief Product Officer "A ‘game-changer’ for curing dry, cracked skin." SHANI COHEN Fashion & Beauty Lead - The Mirror When and how should I apply H.E.O. Mask? You should apply H.E.O. Mask as the final step of your evening skincare routine. After cleansing, smooth an almond-sized amount of Step 1 of H.E.O. Mask over the face, neck and décolletage - avoiding the eye area. Allow to absorb for a few minutes, then gently massage another almond-sized amount of Step 2 of H.E.O. Mask into the same areas. Leave on overnight. We recommend applying H.E.O. Mask 2-3 times a week, or as required. Is H.E.O. Mask non-comedogenic? Yes it is. H.E.O. Mask is non-comedogenic and therefore won't clog your pores. Can I use H.E.O. Mask alongside Crystal Retinal? Yes you can. Think of H.E.O. Mask as your nighttime moisturiser, so apply Crystal Retinal first (after cleansing and toning), followed by H.E.O. Mask. Help Products About Resources Anastasia Z. 🇬🇧 Verified Buyer 31/05/26 Svitlana O. 🇬🇧 Verified Buyer 18/03/26 Yuliia S. 🇳🇱 Verified Buyer 12/02/26 Yuliia S. 🇳🇱 Verified Buyer 12/02/26 Zsuzsanna N. 🇭🇺 Verified Buyer 03/02/26 Iryna R. 🇬🇧 Verified Buyer 05/01/26