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Polyglutamic Acid Serum
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Ingredients in Polyglutamic Acid Serum
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Polyglutamic Acid Serum

Lock in moisture for smooth skin instantly

4.5
Rated 4.5 out of 5 stars
4.5 Stars (499 Reviews)
£15.00 / 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

Delivery info

Last order dates for Christmas delivery

  • Order by 8pm December 19th (Express)

Standard tracked delivery (Evri)

  • £3.99
  • FREE on 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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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.

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4.5
Rated 4.5 out of 5 stars
Based on 499 reviews
Total 5 star reviews: 353 Total 4 star reviews: 77 Total 3 star reviews: 31 Total 2 star reviews: 17 Total 1 star reviews: 21
Reviews Summary
Customers say this serum has a silky, smooth texture that glides easily onto skin. Many reviews mention enhanced hydration and a dewy, glowing finish. The product works well under makeup, with several users mixing it into their foundation for better application. While most praise its moisturizing effects, some note a strong scent and occasional pilling with other products. Common feedback includes soft, plump-feeling skin after use. A few users report issues with the pump mechanism, though most find the product's consistency ideal - neither too thick nor too thin.
499 reviews
  • Cyndi T.
    Verified Buyer
    I recommend this product
    Age Range 55 - 64
    Skin Type Sensitive
    Skin Concerns Fine Lines and Wrinkles, Plumping, Dehydration
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 3 months +
    Sensitive Skin Suitability Suitable for my sensitive skin
    Rated 5 out of 5 stars
    5 days ago
    Feels great

    Feels great on my sensitive skin. Great price for making my skin feel like velvet

  • Sarah
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    5 Stars

    Favourite of all the serums. Really helps keep your skin moisturised. Layers well with other Inkey list products.

  • Rosa M. P.
    Verified Buyer
    I recommend this product
    Age Range 65+
    Skin Type Dry
    Skin Concerns Fine Lines and Wrinkles, Dehydration, Dryness, Hyperpigmentation, Under Eye Circles
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    1 week ago
    Polyglumatic Acid Serum

    Love it