Hyaluronic Acid/Polyglutamic Acid Crosspolymer

Hyaluronic acid/polyglutamic acid crosspolymer is a modified humectant ingredient created by chemically linking hyaluronic acid with polyglutamic acid. This crosslinking process aims to create a more stable molecule with potentially enhanced water-binding capacity compared to standard hyaluronic acid alone.As a humectant, this ingredient draws moisture from the environment and deeper skin layers into the outer epidermis, helping to plump the skin and improve hydration levels. It also functions as a skin conditioner and protective agent, supporting the skin's overall moisture retention.

Antioxidant. Hydrating

The crosspolymer structure allows the ingredient to bind water molecules more effectively than single-component humectants. Once applied, it attracts moisture from the air and from deeper layers of the skin, drawing this water into the stratum corneum (the outermost layer) where it plumps cells and smooths surface texture.By maintaining higher water content in the epidermis, the ingredient helps to support skin elasticity and can temporarily reduce fine line visibility. The crosslinking may also improve the stability of the molecule, potentially extending its hydrating effect on the skin su…

This ingredient works best when applied to damp skin, as it requires moisture in the environment to function optimally. Apply after cleansing and before heavier creams or oils. Layering it with a lightweight moisturiser or serum can help seal in hydration. If using in concentrated serums, a little goes a long way—start with a small amount and adjust based on how your skin feels.

Generally well-tolerated across most skin types. Allergic reactions are rare, though sensitivities to crosslinked polymers are theoretically possible. Those with extremely sensitive skin may wish to patch test before full application.