Ingredient
Polyglutamic Acid (PGA)
Vogue Business reports growing search interest, especially as consumers seek next-generation hydrators.
Category: Humectant
Chemical formula: Polymer: (C5H7NO3)n
Main cosmetic effects: Strong humectant; supports hydrated and plump appearance.
Source: Produced by Bacillus fermentation; associated with natto.
Developer / supplier: Japanese fermentation tradition; modern biotech suppliers
Origin: Japan / China / Global
Representative product: The Inkey List Polyglutamic Acid Serum
Approx. retail price (USD): 16-17
Evidence maturity: Good hydration evidence
What it does
Strong humectant; supports hydrated and plump appearance.
Notes
Humectant | Good hydration evidence