Polyglutamic Acid

Polyglutamic acid (PGA) is a natural biopolymer obtained through bacterial fermentation, composed of repeating glutamic acid units. Its water retention capacity is scientifically documented and associated with holding approximately 5,000 times its weight in water according to available data, making it a recognized humectant active ingredient in cosmetics.
In topical formulation, it is linked to the formation of a hydrating film on the surface that contributes to skin water comfort. It also acts on hyaluronidase, an enzyme involved in the renewal of hyaluronic acid naturally present in the skin, a documented mechanism that supports visible hydration over time.
Beyond its humectant properties, available data associate it with visible improvement in skin suppleness and preservation of skin comfort against external factors such as pollution and climate variations.
Its profile also includes a gentle sensory exfoliating effect, documented to help visually refine skin texture. Its good tolerance makes it suitable for different skin types, including sensitive skin.
In summary, a natural-origin humectant active ingredient linked to supporting skin hydration and comfort, for skin that appears more supple.