The Inkey List Ectoin Hydro-Barrier Serum
Affordable barrier support for reactive and environmentally stressed skin.
Quick verdict
The Inkey List Ectoin Hydro-Barrier Serum is an affordable option for reactive skin that wants barrier support, hydration and calm in one step. It combines ectoin, ceramides, oat and hyaluronic acid in a rounded formula.
Why it made the cut
This serum combines several forms of support in one formula: ectoin, barrier lipids, water-binding ingredients and oat-based comfort. That makes it especially useful for users whose skin tends to react to weather shifts, routine changes, heating, air travel or general environmental stress.
Where to buy
Space NK
Typical UK price £14–£18 for 30ml. Check the retailer for the current price and availability.
Green List analysis
This formula leads with its hero barrier-support ingredient, then backs it up with lipids, hydration and comfort support.
- ectoin — hydration and environmental-stress support
- Hyaluronic Acid Family (Hydrolyzed Sodium Hyaluronate; Sodium Hyaluronate; Sodium Hyaluronate Crosspolymer; Hyaluronic Acid) — water-binding hydration support
- panthenol — comfort and moisture support
- jojoba oil (Jojoba Esters) — conditioning emollient support
- Oat Family (Avena Sativa (Oat) Kernel Extract) — oat-derived comfort support
- glycerin — humectant hydration support
- ceramides (Ceramide NP; Ceramide AP; Ceramide EOP) — barrier-supporting lipids
- cholesterol — barrier-lipid support
- phytosphingosine — barrier-lipid partner
Full INCI
Show full ingredient list
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
Ingredient list source: Space NK, checked 6 September 2026.
For the latest information, review the ingredient list printed on the product packaging before use.
Last reviewed: 10 September 2026