Polyglutamic Acid

Polyglutamic Acid is a naturally occurring biopolymer, a type of peptide, known for its exceptional water-binding capabilities. It forms a hydrating film on the skin, helping to lock in moisture and reduce transepidermal water loss. This ingredient can hold significantly more water than hyaluronic acid, contributing to plump and supple skin.

BenefitStrong 3.5 / 4

Hydration i3.8 / 4

Whether the ingredient helps increase the skin’s water content — humectants that attract water, ingredients that reduce water loss, or ones that make skin feel less dry.

Texture i2.5 / 4

Whether it can improve smoothness and surface texture — roughness, flaking, clogged pores, or unevenness. Exfoliating acids, retinoids, and smoothing moisturizers may score here.

RiskVery low 0 / 4

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

• intense hydration
• improves skin elasticity
• reduces appearance of fine lines

Products with Polyglutamic Acid

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Frequently asked questions

What is Polyglutamic Acid?

Polyglutamic Acid (PGA) is a powerful humectant, a type of peptide, that can attract and hold a large amount of water, significantly more than hyaluronic acid. It helps to keep the skin hydrated and plump.

How does Polyglutamic Acid benefit the skin?

PGA forms a hydrating film on the skin's surface, preventing moisture loss and improving skin elasticity. This leads to a smoother appearance and can reduce the visibility of fine lines.