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Hyaluronic Acid Serum bottle with 2022 Allure award
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Key claims from recent clinical study of customers using Hyaluronic Acid Serum
How to layer Hyaluronic Acid Serum
Key stats from recent clinical trial of customers trying hyaluronic acid serum
Ingredients in Hyaluronic Acid Serum
How to use Hyaluronic Acid Serum
Before and after of customer using Hyaluronic Acid Serum
Different Hyalurhnic Acid Serum bottle sizes and uses (30ml = 60 uses, 60ml = 120 uses, 100ml = 180 uses)
Model holding Hyaluronic Acid Serum
Model applying Hyaluronic Acid Serum to her face

Hyaluronic Acid Serum - 30ml

Instantly hydrates, plumps & firms skin in a lightweight, non-sticky formula - just €10

4.7
Rated 4.7 out of 5 stars
4.7 Stars (2,752 Reviews)
€10,00 / 30ml

Choose your FREE full size mystery gift at cart when you spend €65

What you get: A lightweight hydrating serum that delivers instant and lasting hydration, leaving your skin plump, smooth, and ready for the day. The INKEY cult-favourite hydration serum, clinically proven to deliver instant hydration with 82% of users seeing firmer, smoother skin in just 4 weeks**  

Why it works: 2% Multi-Molecular Hyaluronic Acid holds up to 1000x its weight in water, delivering intense hydration across multiple layers of skin and helps boosts absorption of other products. Matrixyl™ 3000 Peptide helps to pump, firm and smooth skin.

How it feels: Lightweight and hydrating. No greasiness, stickiness, or tackiness. 

When to use: AM & PM. Use this moisturising serum right after your cleanse.   


**4-week independent consumer study of 22 people under dermatological control

Suitable for:

  • All skin types
  • Sensitive skin
  • Pregnancy & breastfeeding
  • Teen approved

Targets:

  • Dehydrated skin
  • Fine lines & wrinkles
  • Damaged skin barrier

Awards & Features

  • Glamour Award
  • Allure 2022 Award
  • CEW 2023 Award
  • get the gloss
  • get the gloss

The cult-favourite, hydration serum that hero that kicked off the INKEY obsession

Clinically proven to deliver instant hydration, plump, firm & smooth skin whilst helping to boost the efficacy of every product you layer on top. At only €10, it’s your overpriced serums worst nightmare.

  • Hydrates & plumps with immediate results

  • Improve skin firmness by 82% in 4 weeks**

  • Boost absorption of other products in a lightweight, non-sticky formula

Hyaluronic Acid Serum

Shipping info

  • Standard EU Tracked Shipping €5.95 (2-5 business days*). FREE on orders over €45**.
  • **The following countries are subject to increased Standard Tracked Shipping rates and increased FREE shipping thresholds.
  • €6.95 - Denmark, Finland, Switzerland, Estonia, Luxembourg. FREE on orders over €45.
  • €8.95 - Spain, Portugal, Greece, Sweden, Croatia, Bulgaria, Romania. FREE on orders over €55.
  • €11.95 - Malta, Cyprus, Iceland, Serbia, North Macedonia, Bosnia & Herzegovina, Monaco. FREE on orders over €65.
  • Express EU Tracked Shipping €11.95 (up to 4 business days*, if ordered before 4pm CET on business days) 
  • *Please note the above shipping timelines are estimates and not guaranteed. Sometimes there may be delays – e.g. carrier delays, logistics, bad weather or things out of our control. Our team can be reached via our contact us page with any further queries you have.  
  • We are currently unable to ship to the following EU countries: Albania, Belarus, Faroe Islands, Georgia, Gibraltar, Kosovo, Liechtenstein, Montenegro, Norway, Republic of Moldova, Reunion, Turkey The Canary Islands or Ukraine 
  • 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.

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Hyaluronic Acid Serum - 30ml

Hyaluronic Acid Serum - 30ml

  • • Instantly hydrates with 2% multi-molecular Hyaluronic Acid.
  • • Plumps fine lines and smooths skin texture in 4 weeks**
  • • Award-winning lightweight formula - suitable for all skin types

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Ectoin Hydro-Barrier Serum

Ectoin Hydro-Barrier Serum

  • • Repairs compromised skin barrier in 15 minutes*
  • • Clinically proven to improve skin bounce and smoothness in 7 days*
  • • Ideal for sensitive, dry or irritated skin

Still not sure?

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  • Before and after showing results of Hyaluronic Acid Serum - 30ml
    "I decided to try Hyaluronic Acid Serum as I'm struggling with acne dry skin from medications. I've been using it for more than a year and my skin is glowing and feels softer than ever! I would definitely recommend this product if you want change your skin for better!"

    Katarzyna

  • Before and after showing results of Hyaluronic Acid Serum - 30ml

    "You have been a part of the past 2 years of my skincare journey. Thank you INKEY!"

    Keanu

  • Before and after showing results of Hyaluronic Acid Serum - 30ml
    "I’ve used INKEY products religiously and my skin is just amazing! This is before I started and what it is like now. My skin's never been better!"

    Adelle

  • Before and after showing results of Hyaluronic Acid Serum - 30ml
    "The INKEY List is the only skincare that's helped my acne-prone skin due to my polycystic ovaries". Lauren has been using Oat Cleansing Balm, Salicylic Acid Cleanser, Hyaluronic Acid Serum, Succinic Acid Treatment and Omega Water Cream since December 2022."

    Lauren

  • Before and after showing results of Hyaluronic Acid Serum - 30ml
    "Just wanted to say I’ve been using your brand for just over a month and the products have really helped with my acne and the scarring! They are amazing and the results are incredible."

    Amy

  • Before and after showing results of Hyaluronic Acid Serum - 30ml
    "I used the online askINKEY service and chose the Hyaluronic Acid Serum, the Succinic Acid Treatment, and the Omega Water Cream. These are my results after 3 months ❤️ "

    Chloe

  • Before and after showing results of Hyaluronic Acid Serum - 30ml
    "Your products have helped me become so much more confident and happy in my skin!"

    Tatiana

4.7
Rated 4.7 out of 5 stars
Based on 2,752 reviews
Total 5 star reviews: 2.2k Total 4 star reviews: 400 Total 3 star reviews: 63 Total 2 star reviews: 27 Total 1 star reviews: 41
Reviews Summary
Customers say this serum absorbs quickly and leaves skin feeling soft, plump, and hydrated without stickiness. Many reviews mention it works well on dry and sensitive skin, with users applying it after cleansing on damp skin. The lightweight texture is frequently praised, with customers noting it layers well under moisturizers and makeup. Common feedback includes improved skin smoothness and a subtle glow. Several users mention it's become a daily essential in their routines, with many making repeat purchases. Some note the bottle size could be larger, and one customer experienced pump issues.
2,752 reviews
  • Connie S.
    Verified Buyer
    Reviewing
    Supersize Hyaluronic Acid Serum - 100ml
    I recommend this product
    Skin Concerns Fine Lines and Wrinkles, Under Eye Circles
    How long have you used this product for? 3 months +
    Sensitive Skin Suitability Suitable for my sensitive skin
    Rated 5 out of 5 stars
    4 days ago
    Daily essential

    I love the hyaluronic acid serum . It leaves my skin feeling soft and hydrated. Love the supersize bottle, it lasts so long. I can't be without it.

  • skylar b.
    Verified Buyer
    Reviewing
    Supersize Hyaluronic Acid Serum - 100ml
    I recommend this product
    Age Range 18 - 24
    Skin Type Sensitive
    Skin Concerns Dryness, Texture
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 3 months +
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    1 week ago
    My FAVORITE holy grail!

    INKEY, please keep this supersize bottle! It is my favorite product EVER! Even the big size isn't big enough!!! I have extremely sensitive skin, and this is the only product that keeps my dry skin hydrated all winter long. Although I use it year-round. Even if you have oily skin, this product is perfect for a hydrated, lightweight glow.

  • Helen T.
    Verified Buyer
    Reviewing
    Hyaluronic Acid Serum - 60ml
    I recommend this product
    Age Range 55 - 64
    Skin Type Combination
    Skin Concerns Blackheads, Oiliness
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 1 month - 3 months
    Sensitive Skin Suitability I don’t have sensitive skin
    Rated 5 out of 5 stars
    1 week ago
    A pleasure to use

    A really nice serum that leaves your skin smooth and prepped ready for your other products.

    Would recommend as an essential step after cleansing.