Supersize Hyaluronic Acid Serum - 100ml
Close-up of a person's eye with text highlighting product benefits
Statistic from clinical study of customers using Hyaluronic Acid Serum
How to layer Hyaluronic Acid Serum in your routine
woman's face with results from recent clinical trial of customer using Hyaluronci acid serum
Ingredients in Hyaluronic acid serum
Bottle of skincare product with droplet on finger and usage instructions.
Before and after using Hyaluronic Acid Serum
3 different sizes of Hyaluronic Acid Serum bottles and usage estimate (30ml = 60 uses, 60ml = 120 uses, 100ml = 180 uses)
Model applying Hyaluronic Acid Serum to her face
Model holding Hyaluronic Acid Serum

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 (2,934 Reviews)
£22.00 (Worth £30.00) / 100ml

FREE Caffeine Eye Cream when you spend £30!

What you get: A lightweight hydrating serum that delivers instant and lasting hydration, leaving your skin plump, smooth, and ready for the day.  

Why it works: 2% Multi-Molecular Hyaluronic Acid holds up to 1000x its weight in water, delivering intense hydration across multiple layers of skin. 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.   

Suitable for:

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

Targets:

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

Awards & Features

Glamour
Allure 2022 Award
CEW 2023 Award

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

Clinically proven to deliver instant hydration – but it doesn’t stop there clinically proven to plumps, firms, smooths and boost the efficacy of every product you layer on top – and its only £22 - its your overpriced serums worst nightmare.

  • Instantly hydrates & plumps

  • Boosts absorption of other products

  • Lightweight, non-sticky formula. Just £22

Delivery info

Standard tracked delivery (Evri)

  • £3.99 or FREE on your first order & orders over £30
  • (2-5 working days*) 

Express tracked delivery (Evri)

  • £5.95 or FREE on orders £50+
  • (Up to 2 working days if ordered before 8pm, excluding weekends*)

*Find out more about delivery options and delivery area restrictions here.

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Compare with...

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Supersize Hyaluronic Acid Serum - 100ml

Supersize Hyaluronic Acid Serum - 100ml

  • • Maintains healthy, hydrated skin.
  • • Helps your other skincare work harder.
  • • Leaves skin plump & smooth.
  • • Every skin's staple serum.

or

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Ectoin Hydro-Barrier Serum

Ectoin Hydro-Barrier Serum

  • • Hydrates and strengthens the skin barrier in just 15 minutes*
  • • Gives bouncier and smoother skin in just 7 days*
  • • Targets signs of a compromised skin barrier.
  • • Perfect for dry, dull and irritated skin.

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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 2,934 reviews
Total 5 star reviews: 2.4k Total 4 star reviews: 422 Total 3 star reviews: 68 Total 2 star reviews: 29 Total 1 star reviews: 42
Reviews Summary
Customers say this serum absorbs quickly and feels lightweight on the skin. Many reviews highlight its non-sticky texture and instant hydrating effects. The serum layers well with other skincare products, and frequent users appreciate its simple, straightforward formula. While most note immediate softness and hydration, some mention the packaging could be improved. Regular users consistently return to this product, making it a staple in their routines.
2,934 reviews
  • Lucia M.
    Verified Buyer
    Reviewing
    Hyaluronic Acid Serum - 30ml
    I recommend this product
    Age Range 18 - 24
    Skin Type Oily
    Skin Concerns Redness, Texture, Oiliness, Blackheads
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    Yesterday
    My favorite product

    My skin feels so hydrated and soft after this. Does not create any slimy cast and absorbs beautifully. The only thing I’d definitely change is the packaging… I’m really not a fan, it doesn’t feel as sterile as a dropper and often wastes product by squeezing out too much

  • A
    Reviewing
    FREE Hyaluronic Acid Serum 30ml
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    5 Stars

    Gorgeous on my skin

  • Margaret E.
    Verified Buyer
    Reviewing
    Hyaluronic Acid Serum - 30ml
    I recommend this product
    Age Range 45 - 54
    Skin Type Dry
    Skin Concerns Fine Lines and Wrinkles, Dryness
    Sensitive Skin Friendly? Yes
    Rated 4 out of 5 stars
    5 days ago
    Hyaluronic Acid

    The hyaluronic acid is nice on my skin.Smooth my dry skin. I Like it alot.