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Ectoin Hydro-Barrier Serum Duo
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How to layer routine
Clinically proven to restore skin bounce in 3 days* *4 week clinical study of 26 people
Ectoin Hydro-Barrier Serum Duo
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Key claim statistics for ectoin Hydro-Barrier serum
Model with ectoin serum on skin

Ectoin Hydro-Barrier Serum Duo | The INKEY List

Double up on your hydration and skin barrier strengthening

4.5
Rated 4.5 out of 5 stars
4.5 Stars (231 Reviews)
£28.50 £30.00 / 2 full-size products
Unlock double hydration and barrier repair with The INKEY List Ectoin Hydro-Barrier Serum Duo - a dual-action powerhouse that deeply hydrates while strengthening your skin’s natural defences. Clinically proven to restore skin bounce in just 3 days* and hydrate and strengthen the skin’s barrier in 15 minutes*, this ectoin serum duo works to optimise your skin’s health from the inside out.

Hydration and barrier support go hand in hand.

Ectoin Serum (2% Ectoin) – A natural skin protector that hydrates, fights signs of ageing and inflammation, and strengthens the skin barrier.

Multi-Molecular Hyaluronic Acid Serum – Works to rebuild and restore the skin’s protective barrier while deeply hydrating up to 10 surface layers deep.

Whether you’re searching for a hydrating serum for dry skin or an everyday solution for balanced, healthier skin, this duo helps to visibly improve five key signs of a compromised barrier: dullness, dryness, redness, flakiness, and slackness. With lightweight, fast-absorbing textures, these serums deliver instant, non-tacky hydration that layers seamlessly under skincare and makeup.

Suitable for:

  • All skin types
  • Barrier support and protection ​

Targets:

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

Proud to be:

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

Awards & Features

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Delivery info

Standard tracked delivery (Royal Mail)

  • £3.99 or FREE on your first order & orders over £30
  • (2-5 working days*) 

Express tracked delivery (Royal Mail)

  • £5.95 or FREE on orders £50+
  • (Up to 2 working days if ordered before 4pm, excluding weekends*)

*Find out more about Delivery here.

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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 231 reviews
Total 5 star reviews: 167 Total 4 star reviews: 39 Total 3 star reviews: 9 Total 2 star reviews: 8 Total 1 star reviews: 8
Reviews Summary
Customers say this serum has a silky, light texture that absorbs quickly into the skin. Many reviews mention immediate improvements in skin softness and hydration. While most find it effective for moisture retention, some note issues with pilling under makeup. Reviews are mixed on long-term hydration benefits, with frequent users praising its plumping effects while others report limited results. The serum's consistency receives widespread appreciation, though some find it needs more product than recommended for full coverage. Most users describe it as non-greasy and comfortable for daily use.
231 reviews
  • Liv
    Verified Reviewer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I do not recommend this product
    Age Range 35 - 44
    Skin Type Dry
    Skin Concerns Hyperpigmentation, Dryness, Redness, Texture
    Sensitive Skin Friendly? No
    Rated 1 out of 5 stars
    Yesterday
    Completely dries out skin

    I have dry skin and this product further dries out my skin. After use, even though I follow with a moisturizing serum and a moisturizer my skin feels very tight and very dry.

    IU Profile picture for INKEY UK
    INKEY UK
    7 hours ago

    Hey Liv,

    Thank you so much for taking the time to share your feedback, and we're truly sorry to hear about your experience with our Ectoin Hydro-Barrier Serum. 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 🖤

  • Mariève L.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I do not recommend this product
    Age Range 25 - 34
    Skin Type Combination
    Skin Concerns Acne Scars, Blackheads, Breakouts, Texture
    Sensitive Skin Friendly? Yes
    Rated 1 out of 5 stars
    Yesterday
    Meh

    I’m really trying to like this serum but I’m not seeing any difference after my second bottle and it just doesn’t hydrate as well as the hyaluronic acid serum on it’s own.

    IU Profile picture for INKEY UK
    INKEY UK
    7 hours ago

    Hey Mariève,

    Thank you so much for taking the time to share your feedback, and we're truly sorry to hear about your disappointing experience with our Ectoin Hydro-Barrier Serum. It's particularly troubling to hear that you haven't noticed any difference after using two bottles and that the hydration levels aren't meeting your expectations compared to our Hyaluronic Acid serum - this is absolutely not the experience we want any of our customers to have. 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 🖤

  • Kristie B.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 65+
    Skin Type Normal
    Skin Concerns Redness, Fine Lines and Wrinkles, Hyperpigmentation
    Sensitive Skin Friendly? Yes
    Rated 4 out of 5 stars
    Yesterday
    Serum

    Like it. Have seen results