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Supersize Hyaluronic Acid Serum - 100ml
Before and after 1 use of HA Serum, showing plumper skin
How to layer Hyaluronic Acid Serum in your routine. Step 2, Hydrate
Key claim from clinical trial of using Hyaluronic Acid Serum
Amount of Hyaluronic Acid Serum to apply
When to apply Hyaluronic Acid Serum
Ingredients of Hyaluronic Acid Serum
Available in 3 sizes. 30ml (60 uses), 60ml (120 uses), 100ml (180 uses)
Model holding Hyaluronic Acid Serum
Model applying Hyaluronic Acid Serum to her face

Supersize Hyaluronic Acid Serum - 100ml | The INKEY List

Non-tacky hydrating serum for all skin types, now x3 the size!

4.7
Rated 4.7 out of 5 stars
4.7 Stars (2,387 Reviews)
£22.00 (Worth £30.00) / 100ml

20% off everything! Use code CHEERS

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You asked, we delivered! Our award-winning #1 bestseller Hyaluronic Acid Serum is now 3x bigger. Designed with the same bestselling formula as our 30ml version, this serum helps your other skincare work harder. Clinically proven to deliver instant and lasting hydration, this non-tacky hydrating serum leaves skin feeling plump, smooth and healthy.

Formulated with 2% multi-molecular Hyaluronic Acid, this powerful moisture-binding ingredient can hold up to 1000x its weight in water, which is essential for maintaining skin hydration and plumpness. Lightweight and rapidly absorbed on contact with the skin, the combination of high and low molecular weight HA helps the serum deliver hydration across multiple layers of the skin's surface. ​

Suitable for all skin types, it glides on and instantly melts into the skin leaving you with a hydrated, dewy base. Helping to combat dry skin, improve the appearance of fine lines and helps maintain an effective skin barrier, it’s a must-have for every skincare routine.​

Discover More about Hyaluronic Acid Serum.

Suitable for:

  • All Skin Types
  • Sensitive Skin
  • Pregnancy & Breastfeeding
  • Teen Approved

Targets:

  • Dehydrated Skin
  • Fine Lines & Wrinkles
  • Damaged Skin Barrier

Proud to be:

  • Carbon Net-Zero
  • B-Corp
  • Cruelty Free
  • Recyclable
  • Vegan
  • Gluten Free
  • Fragrance Free
  • theinkeylist.com exclusive

Awards & Features

Glamour
Allure 2022 Award
CEW 2023 Award
Cosmopolitan Feature

Delivery info

Standard tracked delivery (Royal Mail)

£3.99
(2-5 working days*)

FREE standard tracked delivery on orders over £30

Express tracked delivery (Royal Mail)

£5.95 (Up to 2 working days if ordered before 4pm, excluding weekends*)

FREE express tracked delivery on orders £50+

*Find out more about Delivery here.

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  • Before and after comparison
    "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 comparison

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

    Keanu

  • Before and after comparison
    "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 comparison
    "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 comparison
    "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 comparison
    "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 comparison
    "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 2,387 reviews
Total 5 star reviews: 2k Total 4 star reviews: 306 Total 3 star reviews: 57 Total 2 star reviews: 28 Total 1 star reviews: 39
2,387 reviews
  • Kurt D.
    Verified Buyer
    Supersize Hyaluronic Acid Serum 100ml Duo
    Reviewing
    Supersize Hyaluronic Acid Serum 100ml Duo
    I recommend this product
    Age Range 45 - 54
    Skin Type Oily
    Skin Concerns Fine Lines and Wrinkles, Plumping, Texture, Under Eye Circles
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    18 hours ago
    Amazing product

    My favourite product so good

  • Katharina L.
    Verified Buyer
    Supersize Hyaluronic Acid Serum - 100ml
    Reviewing
    Supersize Hyaluronic Acid Serum - 100ml
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Texture, Hyperpigmentation, Fine Lines and Wrinkles, Breakouts, Dryness
    Rated 5 out of 5 stars
    Yesterday
    Viel besser als das Hyaluronic Acid Serum von The Ordinary!

    Es tut, was es soll und bildet bei meiner Hautpflegeroutine immer eine Art Grundlage für darauf folgende Seren und Pflegeprodukte. Im Gegensatz zum Hyaluron Serum von The Ordinary schäumt es nicht auf der Haut auf und lässt sich super verteilen. Die Konsistenz ist dickflüssig und mega angenehm auf der Haut.

  • Elizabeth Clare Corkery A.
    Verified Buyer
    Supersize Hyaluronic Acid Serum - 100ml
    Reviewing
    Supersize Hyaluronic Acid Serum - 100ml
    I recommend this product
    Age Range 55 - 64
    Skin Type Combination
    Skin Concerns Under Eye Circles, Puffiness, Fine Lines and Wrinkles, Dryness
    Sensitive Skin Friendly? Yes
    Rated 4 out of 5 stars
    Yesterday
    I love the bigger size

    This is a must for me as part of my morning and night skincare routine. I am so glad it is in a bigger size

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