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Supersize Hyaluronic Acid Serum - 100ml on a shelf
Available in 3 sizes: 30ml, 60ml and 100ml
Model's skin before and after using Hyaluronic Acid Serum once
How to layer Hyaluronic Acid Serum in your routine: Step 2, hydrate
Hyaluronic Acid Serum key claims
Amount to apply: Pea-sized amount
When to apply: AM and PM
Hyaluronic Acid Serum ingredients
Model holding a bottle of Hyaluronic Acid Serum 100ml
Model with Hyaluronic Acid Serum on 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 (2,612 Reviews)
$25.00 $33.00 / 100ml
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 Winner
CEW 2023 Award Winner
Cosmopolitan Award

Shipping info

Standard tracked shipping

  • $5.95 or FREE on your first order & orders over $35
  • (2-5 business days*)

Express tracked shipping

  • $15
  • (2-3 business days*, when ordered before 3pm EST)

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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 2,612 reviews
Total 5 star reviews: 2.1k Total 4 star reviews: 357 Total 3 star reviews: 67 Total 2 star reviews: 27 Total 1 star reviews: 42
Reviews Summary
Customers say this serum provides excellent hydration and absorbs quickly into the skin. Many reviews mention its lightweight, non-sticky texture that works well under other skincare products. The serum leaves skin feeling plump and soft throughout the day. While most users report positive experiences with long-term use, some note they need more product to achieve desired results. Common feedback includes appreciation for the larger bottle size and value for money. Reviews highlight its effectiveness in different seasons, though some mention needing additional products during colder months.
2,612 reviews
  • Rachel M.
    Verified Buyer
    Reviewing
    Hyaluronic Acid Serum - 60ml
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Breakouts, Fine Lines and Wrinkles, Blackheads, Hyperpigmentation
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    5 minutes ago
    Hydrating serum

    I use this everyday and it’s really made a difference to my dryness and acne. Used a long side other products it works really well. Keep my skin hydrated and non sticky. No smell. Kind to my sensitive skin. This is my 5th bottle.

  • Victoria
    Reviewing
    Samples
    I recommend this product
    Rated 5 out of 5 stars
    14 hours ago
    5 Stars

    I love these, so I was very happy to see I had a sample in my latest order!

  • Marue C.
    Verified Buyer
    Reviewing
    Hyaluronic Acid Serum - 30ml
    Age Range 35 - 44
    Skin Type Dry
    Skin Concerns Breakouts, Dryness, Texture, Damaged Skin Barrier, Under Eye Circles
    Sensitive Skin Friendly? Yes
    Rated 3 out of 5 stars
    2 days ago
    Ok

    Texture feels fine but my skin is still quite dry.

    IU Profile picture for INKEY USA
    INKEY USA
    20 hours ago

    Hi Marue!

    Thank you for sharing your feedback about our Hyaluronic Acid Serum. While we're pleased to hear that you like the texture, we're sorry that you haven't experienced the hydrating results you were hoping for. For optimal hydration, we recommend applying this serum to damp skin and following with a moisturizer to lock in the hydrating benefits. Our knowledgeable askINKEY team would be delighted to discuss your experience further and explore ways to help you achieve the best possible results from your skincare routine 🖤