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Supersize Hyaluronic Acid Serum 100ml Duo on a shelf
Available in 3 sizes: 30ml, 60ml and 100ml
Before and after results using Supersize Hyaluronic Acid Serum Duo
How to layer Supersize 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
Supersize Hyaluronic Acid Serum ingredients
Model holding a Supersize Hyaluronic Acid Serum 100ml

Supersize Hyaluronic Acid Serum 100ml Duo | The INKEY List

Double up on our non-tacky hydrating serum, now x3 the size!

4.7
Rated 4.7 out of 5 stars
4.7 Stars (2,597 Reviews)
$47.50 $50.00 / 2 full-size products
Revive your complexion and go BIG on hydration with our award-winning Hyaluronic Acid Serum—now 3x bigger and in a duo for even more of the powerful formula you know and love.

This fast-absorbing, non-tacky serum works across multiple layers of the skin to lock in moisture, restoring your skin's plumpness and smoothness while visibly reducing the appearance of fine lines. Perfect for all skin types, it glides on effortlessly and instantly melts into the skin, leaving you with a hydrated, dewy base.

Ideal for combating dry skin, improving the appearance of fine lines, and maintaining a strong skin barrier, this must-have serum is a game-changer for any skincare routine.

This duo includes: 2x Hyaluronic Acid Serum (100ml)

Suitable for:

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

Targets:

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

Proud to be:

  • Carbon Net-Zero
  • Cruelty Free
  • Vegan
  • Recyclable
  • B-Corp
  • theinkeylist.com exclusive
  • Pregnancy & Breastfeeding Safe

Awards & Features

Glamour feature
Allure 2022 award
CEW Award 2023
cosmopolitan

Shipping info

Standard tracked shipping

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

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  • $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 2,597 reviews
Total 5 star reviews: 2.1k Total 4 star reviews: 353 Total 3 star reviews: 66 Total 2 star reviews: 27 Total 1 star reviews: 42
Reviews Summary
Customers say this serum absorbs quickly and feels lightweight on the skin. Many reviews mention its effectiveness for hydration, especially when applied to damp skin. Users appreciate that a small amount goes a long way. Common feedback includes how well it layers under other products and moisturizer. While most find it creates a smooth, plump appearance, a few note it can feel sticky. Long-term users particularly value its role as a skincare staple, with many mentioning they've repurchased multiple times. Reviews are mixed on texture, though most describe it as non-greasy and fast-absorbing.
2,597 reviews
  • Melany
    Reviewing
    Samples
    I do not recommend this product
    Rated 1 out of 5 stars
    8 minutes ago
    1 Star

    why even offer this small of a sample

  • Monica
    Reviewing
    Samples
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    5 Stars

    Love when I get an extra surprise with my orders! It helps me to try something new, fall in love (or not) and then make a decision if its right for me!

    Thank you!

    Forever customer ❤️

  • Alejandra C.
    Verified Buyer
    Reviewing
    Supersize Hyaluronic Acid Serum - 100ml
    I recommend this product
    Age Range 25 - 34
    Skin Type Combination
    Skin Concerns Breakouts, Fine Lines and Wrinkles, Dryness, Oiliness, Blackheads
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    Yesterday
    Nice product

    Love this product, it doesn’t feel oily. Perfect everyday serum