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Model B&A for ectoin
How to layer routine
Clinically proven to restore skin bounce in 3 days* *4 week clinical study of 26 people
Apply pea-sized amount
When to apply: AM & PM
Key ingredient science
Day 1 vs Day 28, showing reduced redness
Day 1 vs Day 28, showing reduced redness
Key claim statistics
Before and after 15 minutes: Instantly strengthen barrier and hydrated up to 10 surface layers deep
Model with ectoin on skin

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 (194 Reviews)
$16.00 $20.00 / 30ml

20% off everything* and FREE 15% Vitamin C and EGF Serum at cart over $50

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 tracked shipping

  • $6.99
  • FREE on your first order & over $50
  • (2-8 business days)

No import duties or fees - Your order will ship domestically from our Canadian warehouse so you can shop with confidence knowing your order will arrive quickly without extra costs

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Compare with...

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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
4.5
Rated 4.5 out of 5 stars
Based on 194 reviews
Total 5 star reviews: 142 Total 4 star reviews: 33 Total 3 star reviews: 7 Total 2 star reviews: 6 Total 1 star reviews: 6
194 reviews
  • Amanda R.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Redness, Dryness, Oiliness, Hyperpigmentation
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    10 hours ago
    Fabulous hydration

    No more flaky skin or dry patches, and reduced my redness significantly

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

    Using it mixed in with hylaronic acid to d/t a few pimples forming when I first started using it

    Appreciating results.

  • M
    Verified Reviewer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Dryness
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    17 hours ago
    Amazing product

    It’s great for my skin. Non sticky and non greasy but hydrating . I use it everyday