Ingredient

Polyglutamic acid

Forms a light moisture film that keeps skin hydrated longer.

What it does

Hydrates · Forms a light film

Evidence

Evidence: Limited · Mostly lab or early data so far.

Often chosen for

Dry, tight-feeling skin

Skin types

Dry, Oily, Combination, Normal, Sensitive

Typical amount

0.1-1% in a formula

Best time

Morning or evening