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Supersize Hyaluronic Acid Serum Duo light shot with each bottle being held in a pair of hands
Before and after results using Supersize Hyaluronic Acid Serum Duo
 Step 1. Cleanse Step 2. HA Serum Step 3. Treatments Step 4. Eye treatment Step 5. Apply moisturizer Step 6. Finish with SPF
Key claim from clinical trial of using Hyaluronic Acid Serum

Supersize Hyaluronic Acid Serum 100ml Duo | The INKEY List

Double up on our bestselling hydration super serum, now 3x the size!

4.7
Rated 4.7 out of 5 stars
4.7 Stars (2,200 Reviews)
$47.50 (Worth $50.00) / 2 full-size products

FREE REUSABLE CLEANSING PAD WHEN YOU BUY ANY FULL-SIZE CLEANSER. CLAIM AT CART

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Revive your complexion and go BIG on hydration.

Our award-winning Hyaluronic Acid Serum serum is now 3x bigger and doubled up so you get more of the same powerhouse formula you know and love. Easily absorbed, non-tacky and working across multiple layers of the skin, it helps to lock in moisture, restoring your skin's plumpness and smoothness, while reducing the appearance of fine lines.

Discover More about Hyaluronic Acid Serum.

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

Delivery info

Standard tracked shipping

$5.95

Free on oders $35+

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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 2,200 reviews
Total 5 star reviews: 1.8k Total 4 star reviews: 289 Total 3 star reviews: 56 Total 2 star reviews: 26 Total 1 star reviews: 39
2,200 reviews
  • Rav R.
    Verified Buyer
    Hyaluronic Acid Serum - 60ml
    Reviewing
    Hyaluronic Acid Serum - 60ml
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Breakouts, Oiliness, Hyperpigmentation, Acne Scars, Redness
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    3 minutes ago
    Fantastic Serum!

    Really good Serum for someone who suffers with sensitive skin. Helps give my skin moisture after using Salicylic Acid Cleanser. Gets rid of the dry skin before I apply the Omega Water Cream.

  • Miriam C.
    Verified Reviewer
    Hyaluronic Acid Serum - 60ml
    Reviewing
    Hyaluronic Acid Serum - 60ml
    I recommend this product
    Age Range 18 - 24
    Skin Type Dry
    Skin Concerns Redness, Dryness
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    Yesterday
    necessario

    uno step della skincare fondamentale, aiuta a mantenere la pelle idratata e rimpolpata

  • Roni G.
    Verified Buyer
    Hyaluronic Acid Serum - 30ml
    Reviewing
    Hyaluronic Acid Serum - 30ml
    I recommend this product
    Age Range 25 - 34
    Skin Type Combination
    Skin Concerns Hyperpigmentation, Oiliness, Acne Scars, Under Eye Circles, Breakouts
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    2 days ago
    Must-Have!

    This is a staple in my routine! Whenever I get lazy with the skin routine, which does happen, I simply cleanse and use the hyaluronic serum to keep my skin hydrated at the very least.

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