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Ection duo packshot
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 Duo | The INKEY List

Double up on your hydration and skin barrier strengthening

4.6
Rated 4.6 out of 5 stars
4.6 Stars (164 Reviews)
$40.00 / 2 full-size products
or $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 defenses. 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 optimize 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 aging 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
  • B-Corp
  • Pregnancy & Breastfeeding Safe
  • theinkeylist.com exclusive
  • Fragrance Free
  • Silicon Free

Awards & Features

Refinery29
Vogue
Grazia

Delivery info

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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
4.6
Rated 4.6 out of 5 stars
Based on 164 reviews
Total 5 star reviews: 122 Total 4 star reviews: 28 Total 3 star reviews: 6 Total 2 star reviews: 4 Total 1 star reviews: 4
164 reviews
  • beth l.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 25 - 34
    Skin Type Combination
    Skin Concerns Fine Lines and Wrinkles, Dehydration
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    3 minutes ago
    Wow!

    Absolutely love this stuff, the texture, the results all of it I have no negatives on the results of the product itself my skin feels really cared for and soothed every time I use this, but similar to some other inkey list formulas, it smells weird. My pump also broke which was a shame but I managed to pry the cap off to get to the good stuff!! Other than the scent and the faulty pump I absolutely love it, and it lives up to the hype! I feel bad but mainly took off stars as it seems the workings of this have a little way to go. But as a product I would 100% recommend.

  • Molly S.
    Verified Reviewer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 25 - 34
    Skin Type Normal
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    15 hours ago
    Really impressed

    I've been struggling with my hydration step after my routine because pure hyaluronic acid wasn't giving me the results I wanted. I picked this up on a whim the other week and I've been genuinely shocked at how quickly the results showed up. My skin barrier is healing, my skin looks hydrated and fiull of life, AND it gives me a little glow.

  • Holly R.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 45 - 54
    Skin Type Combination
    Skin Concerns Breakouts, Dryness, Fine Lines and Wrinkles, Blackheads
    Sensitive Skin Friendly? Yes
    Rated 4 out of 5 stars
    Yesterday
    Best so far

    Moisturizers always make me break out, but so far pretty good with this one, moisturizes without looking too shiny and does seem to work well with my combo skin and breakout tendencies. I do notice that it makes my nose pores pretty unhappy but compared to the many moisturizers I’ve tried, so far my skin is happy with this one if I use it sparingly.