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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
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Ectoin Hydro-Barrier Serum
Model with ectoin serum

Ectoin Hydro-Barrier Serum | The INKEY List

Hydrates whilst supporting and strengthening the skin’s barrier

4.6
Rated 4.6 out of 5 stars
4.6 Stars (175 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

Delivery info

  • Standard EU Tracked Shipping

  • €5.95 (2-5 business days*). FREE on orders above €45**.

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

  • €6.95 - Denmark, Finland, Switzerland, Estonia, Luxembourg - (2-5 business days*). FREE on order over €45.
  • €8.95 - Spain, Portugal, Greece, Sweden, Croatia, Bulgaria, Romania - (2-5 business days*). FREE on order over €55.
  • €11.95 - Malta, Cyprus, Iceland, Serbia, North Macedonia, Bosnia & Herzegovina, Monaco - (2-5 business days*). FREE on 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.

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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

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  • 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
4.6
Rated 4.6 out of 5 stars
Based on 175 reviews
Total 5 star reviews: 130 Total 4 star reviews: 29 Total 3 star reviews: 7 Total 2 star reviews: 5 Total 1 star reviews: 4
175 reviews
  • Sherie B.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Dehydration, Breakouts, Damaged Skin Barrier, Plumping, Texture
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    Yesterday
    Hydration Hydration Hydration!!!

    The hydration I've had in my skin since using this serum has been insane. So much so I've stopped using Hyaluronic acid. I love how it sinks in, repairs my skin barrier, how plump my skin feels after 10 minutes. I absolutely love this serum, can't be without it! Thank you Inkey list!!!

  • Jane D.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum Duo
    I recommend this product
    Skin Type Combination
    Skin Concerns Dehydration, Dryness, Damaged Skin Barrier, Fine Lines and Wrinkles, Under Eye Circles
    Sensitive Skin Friendly? Yes
    Rated 4 out of 5 stars
    Yesterday
    Double bliss!

    I would not be surprised if these serums sold out fast! I was a fan from the first couple of days of trying this serum. So much so, that I just had to buy the duo pack.

    Why not 5 Stars? My only problem is that It's difficult to see how much serum is left in its container.

  • Mariève L.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I do not recommend this product
    Age Range 25 - 34
    Skin Type Normal
    Skin Concerns Acne Scars, Blackheads, Breakouts, Texture
    Sensitive Skin Friendly? Yes
    Rated 2 out of 5 stars
    Yesterday
    Not the most hydrating serum...

    I find this serum doesn't hydrate as much as the hyaluronic acid serum, even when applied to damp skin. I went through the bottle quickly even though I used the recommended amount. Haven't really felt a difference in my skin either.