Ectoin Hydro-Barrier Serum Duo

Ectoin Hydro-Barrier Serum is your daily non-negotiable for the ultimate healthy-looking skin. Clinically proven to restore skin bounce in 3 days* and deeply hydrate and strengthen the skin's barrier in 15 minutes.The dual-action formula is proven to deliver hydration up to 10 surface layers deep.2% Ectoin: Boosts hydration whilst helping to build barrier strength to keep your skin functioning at its best.Multi-Molecular Hyaluronic Acid: Helps restore the protective skin barrier from the outside in, enabling it to retain hydration more effectively.Whether you're looking for a hydrating serum for dry skin or oily, with continued daily use, this hydrating serum for face helps to visibly improve 5 signs of a compromised skin barrier: dryness, flakiness, dullness, redness, and slackness.The milky lightweight texture of Ectoin Serum sinks into the skin leaving an immediate veil of non-tacky hydration which layers perfectly under other skincare and makeup. What you get : The ultimate skin barrier serum for year-round protection. This dual-action ectoin formula deeply hydrates while repairing damaged skin barriers to combat environmental stressors like pollution, air conditioning, and UV damage. Why it works: 2% Ectoin acts as a clinically-proven barrier stabilizer, calming irritation and preventing moisture loss in compromised skin. Multi-Molecular Hyaluronic Acid restores hydration up to 10 layers deep, while our Barrier Blend with 3 Ceramides strengthens skin's natural defenses. How it feels: Lightweight, silky texture that melts into skin without tackiness. Delivers instant hydration with all-day barrier protection for comfortable, resilient skin. When to use : Apply AM and PM after cleansing, before moisturiser. Essential serum for damaged barriers, sensitive skin, and daily environmental protection. This Duo contains x2 Ectoin Hydro-Barrier Serum (30ml) What you get : The ultimate skin barrier serum for year-round protection. This dual-action ectoin formula deeply hydrates while repairing damaged skin barriers to combat environmental stressors like pollution, air conditioning, and UV damage. Why it works: 2% Ectoin acts as a clinically-proven barrier stabilizer, calming irritation and preventing moisture loss in compromised skin. Multi-Molecular Hyaluronic Acid restores hydration up to 10 layers deep, while our Barrier Blend with 3 Ceramides strengthens skin's natural defenses. How it feels: Lightweight, silky texture that melts into skin without tackiness. Delivers instant hydration with all-day barrier protection for comfortable, resilient skin. When to use : Apply AM and PM after cleansing, before moisturiser. Essential serum for damaged barriers, sensitive skin, and daily environmental protection. This Duo contains x2 Ectoin Hydro-Barrier Serum (30ml) Standard tracked delivery (Evri) £3.99 or FREE on orders over £30. (2-5 working days*) Express tracked delivery (Evri) £5.95 or FREE on orders £50+. (Up to 2 working days if ordered before 8pm, excluding weekends*) *Find out more about delivery options and delivery area restrictions here . Track the status of your parcel with our trusted couriers Loading… Great news, You qualify for FREE standard delivery You're £ 30.00 away from FREE standard delivery Close Delivery info Close How to use Use AM and PM. Apply a pea-sized amount of this skin barrier repair serum to cleansed skin, before any other serums Follow with Treatments → moisturiser . Finish with SPF in your AM routine. I NKEY Tip Layering more than one serum? Apply this hydrating serum first for max absorption. Heads up When adding new products to your skincare routine, we always recommend patch testing. Learn more here . Storage Store in a cool, dry place (15–25°C). Keep out of direct sunlight. Avoid eyes. For external use only. Keep out of reach of children. Key Claims Clinically proven to hydrate + strengthen the barrier in 15 minutes* Visibly restores bounce in 3 days * Visibly improves 5 signs of a compromised skin barrier** Clinical study of 31 people* 4-week clinical study of 26 people** Ingredients 2% Ectoin (Hydration + Barrier) : Hydrates while supporting and strengthening the skin barrier. 2.5% Multi-Molecular Hyaluronic Acid (Hydration): 4 types of Hyaluronic Acid for deep, multi-level hydration. 1% Barrier Blend (Barrier): Includes three Ceramides to help protect and strengthen the skin's barrier Aqua (Water / Eau), Propanediol, Caprylic/Capric Triglyceride, Coconut Alkanes, Ectoin, Hydrolyzed Sodium Hyaluronate, Sodium Hyaluronate, Maltodextrin, Phenoxyethanol, Sodium Stearoyl Glutamate, Panthenol, Cetearyl Alcohol, Sclerotium Gum, Xanthan Gum, Glyceryl Stearate, Jojoba Esters, Coco-Caprylate/Caprate, Ethylhexylglycerin, Sodium Citrate, Helianthus Annuus (Sunflower) Seed Wax, Citric Acid, Polyglyceryl-10 Stearate, Avena Sativa (Oat) Kernel Extract, Glycerin, Leuconostoc/Radish Root Ferment Filtrate, Triethyl Citrate, Pentylene Glycol, Polyglyceryl-6 Behenate, Sodium Hyaluronate Crosspolymer, Ceramide NP, Hyaluronic Acid, Ceramide AP, Cholesterol, Phytosphingosine, Behenic Acid, Sodium Levulinate, Polyglycerin-3, Potassium Sorbate, Sodium Cetearyl Sulfate, Ceramide EOP. FAQs WHEN DO I USE ECTOIN HYDRO-BARRIER SERUM? Use first after cleansing, AM and PM. Follow with treatments, moisturiser, and SPF in the morning. HOW IS THIS DIFFERENT FROM REGULAR HYALURONIC ACID SERUM? While Hyaluronic Acid focuses purely on hydration, our Ectoin Serum provides dual-action barrier repair + hydration. Ectoin specifically targets barrier function, making it ideal for sensitive or compromised skin that needs more than moisture alone. CAN I LAYER IT WITH OTHER PRODUCTS? Yes - it plays well with all actives, AM and PM. CAN I USE THIS BARRIER SERUM WITH RETINOL? Yes! This gentle formula is perfect for supporting skin during retinol use. Apply the barrier serum first, wait 30 seconds, then follow with retinol treatment to minimize irritation. CAN I USE THIS IF I HAVE ROSACEA PRONE OR VERY SENSITIVE SKIN? Absolutely. Ectoin is clinically proven gentle for sensitive skin and may help calm irritation associated with compromised barriers. Always patch test new products first. IS IT NON-COMEDOGENIC? Yes. Oil-free and won’t clog pores. WHAT IS THE SKIN BARRIER + WHY DOES IT MATTER? It’s your skin’s outer layer - keeps good stuff in and irritants out. A healthy barrier = calm, hydrated, happy skin. WHAT DOES A DAMAGED SKIN BARRIER LOOK LIKE? Signs include dryness, flakiness, redness, sensitivity, tightness, and increased breakouts. Your skin may feel rough, look dull, or react to products that previously caused no issues. WHAT CAUSES SKIN BARRIER DAMAGE? Common causes include over-exfoliation, harsh weather, pollution, stress, aging, certain medications, and aggressive skincare routines. Environmental factors like air conditioning and heating also weaken barriers. HOW LONG DOES IT TAKE TO REPAIR A DAMAGED SKIN BARRIER? Clinical studies show our Ectoin Serum begins strengthening barriers in just 15 minutes*, with visible improvement in skin bounce and comfort within 3 days*. For optimal barrier restoration, use consistently for 4-6 weeks. WHY HYDRATION + BARRIER SUPPORT TOGETHER? They work hand-in-hand. No hydration = weak barrier. Weak barrier = no hydration. This serum targets both at once. CAN I APPLY MAKEUP OVER IT? Yes. Wait 30–60 seconds before applying makeup to avoid pilling. DOES IT HAVE SPF? No - follow with SPF in the morning. IS IT VEGAN? Yes! Certified by The Vegan Society. IS IT SAFE FOR PREGNANCY/BREASTFEEDING? Yes. CAN I USE THIS WITH PRESCRIPTION PRODUCTS? Check with your doctor first. WHAT’S THE PH LEVEL? pH 5.5–6.8 We Give A Care Skincare has become complicated. Too many ingredients, too many opinions, and too many products promising everything. At The INKEY List, we believe you don't need more skincare, you need clarity you can trust. That's why we take the science and make it simple. We help people understand their skin, find the right ingredients, and build routines that deliver real results. Through innovative, science-backed formulas, we make effective skincare accessible to everyone. Because we care about great skincare for everyone. Clear guidance. Proven ingredients. Real results. Because at The INKEY List, We Give A Care. Approved under the Cruelty Free International Leaping Bunny programme. 100% of our packaging is recyclable. Learn how to recycle your INKEY List products . 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