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Polyglutamic Acid Serum
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Text on a white background explaining how to Polyglutamic Acid Serum in a skincare routine with steps listed.
Ingredients in Polyglutamic Acid Serum
Hand with a pea-sized amount of Polyglutamic Acid Serum and text on how to use it.
Before and after comparison of a woman's face with a neutral background
Polyglutamic Acid Serum
Person applying lip product with text about Polyglutamic Acid Serum benefits

How to layer Polyglutamic Acid Serum in your routine. Step 1: Cleanse. Step 2: Hyaluronic Acid Serum. Step 3: Polyglutamic Acid Serum. Step 4: Eye Treatment. Step 5: Moisturize. Step 6: SPF

Text on a white background explaining how to Polyglutamic Acid Serum in a skincare routine with steps listed.
Ingredients in Polyglutamic Acid Serum
Hand with a pea-sized amount of Polyglutamic Acid Serum and text on how to use it.
Before and after comparison of a woman's face with a neutral background

Polyglutamic Acid Serum

Lock in moisture for smooth skin instantly

4.4
Rated 4.4 out of 5 stars
4.4 Stars (538 Reviews)
$17.00 / 30ml

What you get: A smoothing serum that locks in moisture and instantly softens the look of fine lines—great for layering and makeup prep.

Why it works: 3% Polyglutamic Acid complex holds 4x more moisture than Hyaluronic Acid. 2% Invisaskin supports long-lasting hydration and smoother skin texture.

How it feels: Silky, lightweight, and smoothing. Absorbs fast.

When to use: AM & PM. Use as your last serum before moisturiser.

Suitable for:

  • All skin types
  • Sensitive skin
  • Pregnancy & breastfeeding

Targets:

  • Uneven skin texture
  • Dehydrated skin

Awards & Features

Shipping info

  • Standard USA Tracked Shipping from $7.95* (2-5 business days*). FREE on orders over $40.
  • Standard Tracked Shipping rates per state:
  • $7.95 – Alabama, Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia,West Virginia, Wisconsin, Wyoming
  • $8.95 – Alaska, Arizona, California, Hawaii, Idaho, Nevada, Oregon, Washington


We are currently unavailable to ship to Guam, Puerto Rico or the US Virgin Islands due to carrier restrictions.  

  • *Please note the above shipping timelines are estimates and not guaranteed. Sometimes there may be delays – e.g. carrier delays, logistics, bad weather or things out of our control.   


Find out more about shipping here.

Our team can be reached via our contact us page with any further queries you have or email help@theinkeylist.com for any queries on delivery or taxes. 

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This product

Have you tried?

This product

Polyglutamic Acid Serum

Polyglutamic Acid Serum

  • • Locks in hydration on the skin’s surface for smoother, bouncier-looking skin.
  • • Instantly softens fine lines and evens texture—perfect under makeup or worn alone.
  • • Best for sealing in moisture and creating a smooth canvas.

or

Have you tried?

Hyaluronic Acid Serum - 30ml

Hyaluronic Acid Serum - 30ml

  • • Pulls water into the deeper layers of skin for immediate and long-lasting hydration.
  • • Plumps and smooths the look of fine lines while supporting a healthy skin barrier.
  • • Best as your first serum to boost every step that follows.
More Info

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Before results

Callie has used INKEY products for 2 years. She used Polyglutamic Acid in her routine with Salicylic Acid Cleanser, Hyaluronic Acid Serum, Glycolic Acid Toner, Succinic Acid Blemish Treatment, 15% Vitamin C & EGF, Symbright Moisturizer and Rosehip Oil to improve her skin.

Callie Hammond

Verified Purchase
4.4
Rated 4.4 out of 5 stars
Based on 538 reviews
Total 5 star reviews: 377 Total 4 star reviews: 81 Total 3 star reviews: 34 Total 2 star reviews: 20 Total 1 star reviews: 26
Reviews Summary
Customers say this serum leaves skin feeling soft, silky, and deeply hydrated with a plumping effect. Many appreciate its lightweight texture and versatility as a makeup base or mixed into foundation for a dewy finish. Users frequently mention it works well with hyaluronic acid and helps lock in moisture throughout the day. Several customers note it's particularly beneficial for sensitive, dry, or mature skin. Common concerns include a strong chemical-like smell that dissipates after application, occasional pump malfunctions, and some pilling when layered with certain products. Many customers are repeat purchasers who use it daily in their skincare routines.
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538 reviews
  • Hillary W.
    Verified Buyer
    I recommend this product
    Age Range 45 - 54
    Skin Type Sensitive
    Skin Concerns Hyperpigmentation, Fine Lines and Wrinkles, Dryness
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 3 months +
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    10 hours ago
    Awesome Hydrator

    I love both the consistency and the results of this thicker than water serum. I put it on after my other watery serums and my face is more hydrated with consistent use. It has no fragrance and great ingredients.

    Was this helpful?
  • Ingo S.
    Verified Buyer
    I recommend this product
    Age Range 45 - 54
    Skin Type Normal
    Skin Concerns Plumping, Puffiness, Dryness, Under Eye Circles
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 3 months +
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    2 weeks ago
    Great Product

    Make the job like it should 😀

    Was this helpful?
  • Ari A.
    Verified Buyer
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Fine Lines and Wrinkles, Under Eye Circles, Redness, Dryness, Oiliness
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 1-3 weeks
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    3 weeks ago
    This enhances and smoothens skin 10/10

    This the first Polyglutamic Acid Serum I've bought and it is now my go-to-hydration-serum. You can feel the difference within the first week and the skin feels extremely soft, light and firm - I think the skin looks also significantly better after using this. I combine Niacinamide Serum, Vitamin C and Hyaluronic Acid Serum in my morning routine with this new Serum - I just love it.

    Was this helpful?

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