Naturally found in the skin, Polyglutamic Acid (PGA) helps to maintain skin\'s moisture levels and holds 4 times more moisture than hyaluronic acid. The INKEY List Polyglutamic Acid it helps to hydrate, while providing a moisturising film that smoothes the appearance of fine lines and wrinkles. A high molecular weight formula, Polyglutamic acid works on the surface of the skin, and helps to enhance skin\'s own natural moisturising factors, while helping to brighten and even skin tone. For optimal results pair with Hyaluronic Acid. A triple molecular weight formula that works below the surface of the skin, helping it look and feel hydrated, plump and healthy. Polyglutamic Acid helps to: - Forms a thing, smooth and moisturising film on the skin - Reduce the appearance of fine lines - Brighten skin and evens tone 3% polyglutamic acid complex, a natural high molecular weight amino acid polymer specifically designed to enhance skin moisturization. 2% invisaskin forms an invisible, water-soluble film that adheres to the skin.