NEW Exosome Hydro-Glow Complex Shop now >

Free delivery on your first order!

FREE standard shipping on orders over €45

Free full size cleanser* (worth €14) Take our Skincare Quiz >

Hero image of ectoin
Before and after using ectoin serum
How to layer in your routine
Clinically proven to restore skin bounce in 3 days* *4 week clinical study of 26 people
Amount to apply  - pea sized amount
Apply in the AM & PM
Key ingredients science
Ectoin B&A
Ectoin B&A 28 days
Key claim statistics
Ectoin Hydro-Barrier Serum
Model with ectoin serum

Ectoin Hydro-Barrier Serum | The INKEY List

Hydrates whilst supporting and strengthening the skin’s barrier

4.5
Rated 4.5 out of 5 stars
4.5 Stars (263 Reviews)
€16,00 / 30ml
A breakthrough in barrier skincare, The INKEY List Ectoin Hydro-Barrier Serum is your winter skin savior—a dual-action serum that boosts hydration up to 10 surface layers deep whilst building a stronger, more resilient skin barrier to defend against cold weather, dry air, and seasonal stressors. Clinically proven to restore skin bounce in just 3 days and deeply hydrate + strengthen the skin’s barrier in just 15 minutes, it’s a cold-weather essential for keeping skin hydrated, soothed, and glowing all season long.

Replenishing your hydration whilst simultaneously repairing your barrier is essential for protecting against winter dryness and moisture loss. Our Ectoin Hydro-Barrier Serum has been uniquely formulated with ingredients that work synergistically to provide deep, multi-level hydration, helping to lock in moisture and shield the skin from environmental aggressors.

2% Ectoin: Known as an extreme protector, Ectoin acts as a natural hydrator and skin cell stabilizer, helping to prevent winter-induced dehydration, calm irritation, and reinforce barrier strength for skin that stays soft, smooth, and comfortable.

Multi-Molecular Hyaluronic Acid: Helps restore the protective skin barrier from the outside in, enabling it to retain moisture more effectively—even in cold, dry air.

Whether you're looking for a hydrating serum for winter-parched skin or a lightweight layer of moisture to keep skin balanced, with continued daily use, this serum visibly improves 5 signs of a compromised skin barrier: dullness, dryness, redness, flakiness, and slackness. The INKEY List’s Ectoin Serum has a lightweight texture that melts into the skin, delivering instant, non-tacky hydration—perfect for layering under your winter skincare and makeup routine.

Suitable for:

  • All skin types
  • Barrier support and protection ​

Targets:

  • Dehydrated skin
  • Compromised skin barrier
  • Dryness
  • Flakiness
  • Dullness

Proud to be:

  • Cruelty Free
  • Carbon Net-Zero
  • Clinically Tested
  • B-Corp
  • Fragrance Free
  • Silicon Free
  • Alcohol Free
  • Vegan
  • Dermatologically Tested
  • Pregnancy & Breastfeeding Safe

Awards & Features

refinery29
Vogue
Grazia

Shipping info

Standard EU Tracked Shipping

  • €5.95**
  • FREE on your first order & over €45**
  • (2-5 business days*)

**The following countries are subject to increased Standard Tracked Shipping rates and increased FREE shipping thresholds. In addition, Express Shipping is not available to these countries.

  • €6.95 - Denmark, Finland, Switzerland, Estonia, Luxembourg - FREE on your first order & over €45
  • €8.95 - Spain, Portugal, Greece, Sweden, Croatia, Bulgaria, Romania - FREE on your first order & over €55
  • €11.95 - Malta, Cyprus, Iceland, Serbia, North Macedonia, Bosnia & Herzegovina, Monaco - FREE on your first order & over €65.

Express EU Tracked Shipping

  • €11.95
  • (up to 4 business days*, if ordered before 4pm CET on business days) 

Tariff or duties

  • Orders with EU shipping destinations won't be subject to any tariff or duties, however please note that there are a small number of EU and European territories that still require tariffs and duties that will need to be covered by the customer.

*Find out more about shipping here.

Track the status of your parcel with
our trusted couriers

Compare with...

This product

Have you tried?

This product

Ectoin Hydro-Barrier Serum

Ectoin Hydro-Barrier Serum

  • • For those who want healthier, stronger skin
  • Hydrates & strengthens the skin barrier in just 15 minutes*
  • • Gives visibly bouncier & smoother skin in just 7 days*
  • • Visibly improves 5 signs of a compromised skin barrier: dryness, flakiness, dullness, redness and slackness

or

Have you tried?

Hyaluronic Acid Serum - 30ml

Hyaluronic Acid Serum - 30ml

  • • For those who want to maintain healthy, hydrated skin
  • • Provides instant & lasting hydration
  • • Helps your other skincare work harder
  • • Leaves skin feeling plump & smooth

Still not sure?

Take our Skin Quiz, choose your personalized routine and get FREE products.

Take The Quiz
  • Before and after comparison
    "I was actually shocked with the results myself it kept improving and I started seeing the difference after a week and it just kept getting better I can’t wait for the official launch I’m gonna buy more products from inkey I’m really impressed with the result, this product is a part of my daily morning and night skincare routine and I’m so thankful for the opportunity you guys gave me to test this out"

    Sumbal

  • Before and after comparison
4.5
Rated 4.5 out of 5 stars
Based on 263 reviews
Total 5 star reviews: 187 Total 4 star reviews: 45 Total 3 star reviews: 11 Total 2 star reviews: 9 Total 1 star reviews: 11
Reviews Summary
Customers say this serum provides noticeable hydration and leaves skin feeling soft and smooth. Many reviews mention its lightweight texture and quick absorption. While most find it effective for moisturizing, some note it can pill under makeup. Common feedback includes improved skin texture and plumpness. Reviews are mixed on its compatibility with sensitive skin - some find it soothing while others report breakouts. Users particularly appreciate its performance during winter months. Some mention it works best when applied to damp skin.
263 reviews
  • Jasmine C.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 25 - 34
    Skin Type Dry
    Skin Concerns Dryness, Fine Lines and Wrinkles, Dehydration
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    7 minutes ago
    Serums

    Feels gentle on the skin, doesn’t flare up my eczema.

  • Maria Eva Maccione S.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Dry
    Skin Concerns Texture, Hyperpigmentation, Fine Lines and Wrinkles, Under Eye Circles, Dryness
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    20 hours ago
    Absolutely wonderful!!!!

    I have been using it for a 2 months now and my skin feels and looks more glowy and hydrated. I combine it with the peptides cream.

  • Sue C.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Dry
    Skin Concerns Fine Lines and Wrinkles, Breakouts, Texture, Oiliness, Plumping
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    Yesterday
    Fantastic serum

    Believe the hype-This stuff has made my horrible old skin look much better