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2 bottles of ectoin on shelf
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
Model with ectoin serum

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 (235 Reviews)
€30,40 €32,00 / 2 full-size products

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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
  • Dermatologically Tested
  • Pregnancy & Breastfeeding Safe
  • theinkeylist.com exclusive
  • B-Corp
  • Fragrance Free

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.

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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 235 reviews
Total 5 star reviews: 171 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, 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.
235 reviews
  • Mark G.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum Duo
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Plumping, Redness, Acne Scars
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    3 days ago
    Ectoin Hydro

    the results are very noticeable after few application. about to order two.

  • Kara A.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Rated 5 out of 5 stars
    5 days ago
    Love!

    This stuff is great!

  • Liv
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 18 - 24
    Skin Type Normal
    Skin Concerns Breakouts, Acne Scars, Hyperpigmentation, Damaged Skin Barrier, Redness
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    6 days ago
    Incredible

    I have extremely sensitive skin and use Differin and finecea on alternating nights. My barrier was beyond damaged, and my skin reacts to 90% of any new products I use but this? Is incredible. It’s rare for me to love a product so much but I’ll be repurchasing this indefinitely!