NEW! Milk it, spritz it. Hydration from AM to PM. Shop now >

NEW Exosome Hydro-Glow Complex Shop now >

Free full size cleanser* (worth €15) Take our Skincare Quiz >

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 (276 Reviews)
€30,40 €32,00 / 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
  • 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.

*Find out more about shipping here.

Track the status of your parcel with
our trusted couriers

Still not sure?

Take our Skin Quiz, choose your personalized routine and get FREE products.

Take The Quiz
  • 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 276 reviews
Total 5 star reviews: 199 Total 4 star reviews: 46 Total 3 star reviews: 11 Total 2 star reviews: 9 Total 1 star reviews: 11
Reviews Summary
Customers say this serum provides noticeable hydration and leaves skin feeling soft and smooth. Many reviews mention its lightweight texture and quick absorption. While most find it effective for moisturizing, some note it can pill under makeup. Common feedback includes improved skin texture and plumpness. Reviews are mixed on its compatibility with sensitive skin - some find it soothing while others report breakouts. Users particularly appreciate its performance during winter months. Some mention it works best when applied to damp skin.
276 reviews
  • beth l.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 25 - 34
    Skin Type Combination
    Skin Concerns Breakouts, Dryness, Damaged Skin Barrier
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    Yesterday
    Great product

    Great product, my skin has been so much better following the use of this product and my skin is looking so much healthier. Was having loads of breakouts prior and now my skin is great since I’ve been using this product

  • Vanessa G.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 45 - 54
    Skin Type Dry
    Skin Concerns Redness, Dehydration
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    2 days ago
    Lovely hydrating serum

    My skin tends dry and can be reactive, so finding a serum that hydrates effectively and supports my skin barrier is a real win. It sits well under SPF and with the Ceramide Moisturiser creates a good base for makeup.

  • Angela D.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 55 - 64
    Skin Type Dry
    Skin Concerns Dehydration, Redness, Dryness, Fine Lines and Wrinkles, Damaged Skin Barrier
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    2 days ago
    Hydrating

    Sinks into my skin, got eczema and dry skin. Feels lovely