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Ection duo packshot
Model B&A for ectoin
How to layer your routine:  with a five-step sequence: 1. Clean, 2. Hydrate, 3. Treat, 4. Moisturize, 5. SPF
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
Clinically Proven to Hydrate + Strengthen the barrier in 15 minutes *Clinical study of 31 people
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

4.5
Rated 4.5 out of 5 stars
4.5 Stars (243 Reviews)
$38.00 (Worth $40.00) / 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 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

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

*Find out more about shipping 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 243 reviews
Total 5 star reviews: 172 Total 4 star reviews: 41 Total 3 star reviews: 10 Total 2 star reviews: 9 Total 1 star reviews: 11
243 reviews
  • Aditi B.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum Duo
    I recommend this product
    Age Range 18 - 24
    Skin Type Combination
    Skin Concerns Breakouts, Oiliness, Hyperpigmentation
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    Yesterday
    Worth it!

    Such a pleasant surprise. A very nice product which is really hydrating, leaves the skin feeling tight and rejuvenated as well. Highly recommend!

  • Leanne W.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Fine Lines and Wrinkles, Blackheads, Oiliness
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    2 days ago
    Excellent product

    Makes my face feel so hydrated absolutely love this

  • Madison D.
    Verified Buyer
    Reviewing
    Ectoin Hydro-Barrier Serum
    I do not recommend this product
    Age Range 18 - 24
    Skin Type Oily
    Skin Concerns Oiliness, Breakouts, Acne Scars, Blackheads
    Rated 1 out of 5 stars
    2 days ago
    Feels nice but too many breakouts for me

    My sensitive skin girlies, approach with caution! I have an unusual amount of new whiteheads anytime I use this serum, morning or night. I wish it produced results that match the way this feels on my skin!

    IC Profile picture for INKEY CA
    INKEY CA
    2 days ago

    Thank you so much for taking the time to share your feedback, Madison.

    We're truly sorry to hear about your experience with our Ectoin Hydro-Barrier Serum and the breakouts you've encountered. It's particularly troubling to hear that despite the pleasant texture, you're experiencing unusual whiteheads when using the product - this is absolutely not the experience we want any of our customers to have. While we formulate our products to be suitable for sensitive skin, we understand that everyone's skin can react differently. We take your feedback very seriously, and 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 🖤