Sodium Hyaluronate Crosspolymer

Sodium hyaluronate crosspolymer is a three-dimensionally cross-linked HA network that resists enzymatic breakdown by hyaluronidase, staying intact on the skin far longer than linear HA. The polymer film continuously releases hydration, provides an instant tightening effect, and shields the barrier from environmental stress. Independent measurements show hydration curves extending beyond 24 hours from a single application. At 0.1–1% it adds a silky, cushiony skin feel that formulators love. It is the "set-and-forget" hydrator for long days, flights, and dry offices — combine with standard HA serums for both instant and sustained moisture.