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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
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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

4.5
Rated 4.5 out of 5 stars
4.5 Stars (245 Reviews)
€16,00 / 30ml

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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.

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  • €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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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

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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
4.5
Rated 4.5 out of 5 stars
Based on 245 reviews
Total 5 star reviews: 174 Total 4 star reviews: 41 Total 3 star reviews: 10 Total 2 star reviews: 9 Total 1 star reviews: 11
Reviews Summary
Customers say this serum has a silky, lightweight texture that absorbs easily into the skin. Many reviews mention noticeable improvements in skin hydration and smoothness. While most find it works well in their routines, some note it can pill under makeup or other products. Reviews frequently highlight the non-sticky formula and immediate plumping effect. Some users prefer using it in evening routines, while others enjoy it both day and night. A few mention it didn't provide enough hydration for their needs.
245 reviews
  • Aditi B.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum Duo
    I recommend this product
    Age Range 18 - 24
    Skin Type Combination
    Skin Concerns Breakouts, Oiliness, Hyperpigmentation
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    2 hours ago
    Worth it!

    Such a pleasant surprise. A very nice product which is really hydrating, leaves the skin feeling tight and rejuvenated as well. Highly recommend!

  • Leanne W.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Fine Lines and Wrinkles, Blackheads, Oiliness
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    20 hours ago
    Excellent product

    Makes my face feel so hydrated absolutely love this

  • Madison D.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I do not recommend this product
    Age Range 18 - 24
    Skin Type Oily
    Skin Concerns Oiliness, Breakouts, Acne Scars, Blackheads
    Rated 1 out of 5 stars
    Yesterday
    Feels nice but too many breakouts for me

    My sensitive skin girlies, approach with caution! I have an unusual amount of new whiteheads anytime I use this serum, morning or night. I wish it produced results that match the way this feels on my skin!

    IE Profile picture for INKEY EU
    INKEY EU
    22 hours ago

    Thank you so much for taking the time to share your feedback, Madison.

    We're truly sorry to hear about your experience with our Ectoin Hydro-Barrier Serum and the breakouts you've encountered. It's particularly troubling to hear that despite the pleasant texture, you're experiencing unusual whiteheads when using the product - this is absolutely not the experience we want any of our customers to have. While we formulate our products to be suitable for sensitive skin, we understand that everyone's skin can react differently. We take your feedback very seriously, and we'd love for you to reach out to our askINKEY Team, as we would greatly appreciate the opportunity to understand your experience further and explore how we can make this right for you 🖤