The INKEY List Polyglutamic Acid Serum for Face — 1.0 fl oz, 3% PGA Hydrating Lightweight Formula

The INKEY List Polyglutamic Acid Serum is a lightweight, surface-level hydrator that locks in moisture, smooths the look of fine lines, and creates a silky base for makeup.

Designed as a targeted boost for dry or dehydrated skin, this 3% polyglutamic acid (PGA) serum uses a high molecular weight amino polymer to attract and retain water at the skin’s surface. Unlike deeper-penetrating humectants, PGA forms a moisture-rich film across the epidermis to improve immediate texture, soften the appearance of fine lines, and enhance overall radiance without heaviness or residue.

How does this serum hydrate differently from hyaluronic acid?

Polyglutamic acid sits on the skin’s surface and binds water very efficiently; it can hold several times more moisture by weight than some hyaluronic acid forms. The result is a dewy, plump finish on the outer layer of skin that helps makeup apply smoothly and stay even.

• 3% high molecular weight PGA to form a hydrating film
• Locks moisture at the epidermal level rather than deeper layers
• Light, non-sticky texture suitable for layering under creams
• Enhances makeup adhesion and reduces dry patches

Will it reduce the appearance of fine lines and uneven tone?

By bolstering surface hydration and smoothing texture, the serum can make fine lines look less noticeable and help the complexion appear more even. While it improves visible texture and radiance, it works best as part of a broader skincare routine for long-term tone and elasticity goals.

• Improves visible smoothness where dryness accentuates lines
• Brightens by evening the skin’s surface light reflection
• Complements serums and treatments aimed at pigmentation or collagen support
• Can be used day and night to maintain consistent hydration

How should I use this product in my daily routine?

Apply the serum to clean, towel-dried skin before heavier creams and oils so the hydrating film can form effectively. Because the formula is lightweight, it layers well with sunscreens and makeup, making it a versatile step in both morning and evening regimens.

• Use 2–3 drops on face and neck after cleansing and toning
• Follow with moisturizer to seal hydration for longer wear
• Safe to combine with acids, retinoids, and vitamin C in most routines
• Suitable under SPF in morning routines for smooth base

What texture and finish can I expect?

The serum has a silky, lightweight feel that absorbs quickly without leaving tackiness, creating a smooth canvas for makeup. It gives skin a subtle glow rather than an oily shine, making it appropriate for varied skin types seeking surface hydration.

• Silky, non-greasy formula that layers well
• Creates a soft, luminous finish ideal for makeup application
• Quick absorption prevents pilling with other products
• Works for normal, dry, combination, and dehydrated skin

Who is this for: The INKEY List Polyglutamic Acid Serum is intended for people wanting immediate surface hydration, a smoother skin texture, and a better base for makeup. It’s especially helpful for anyone with dry or dehydrated skin, those who notice fine lines from moisture loss, or users seeking a lightweight hydrating layer that integrates easily into existing skincare routines.