Sodium Acetylated Hyaluronate

Sodium acetylated hyaluronate (AcHA) is a chemically acetylated HA derivative with both hydrophilic and lipophilic character — giving it dramatically longer residence time on and in the skin than standard sodium hyaluronate. Studies show it maintains hydration effects for up to 72 hours versus hours for ordinary HA, boosts the expression of the skin’s own hyaluronan synthase, and improves desquamation of dry, flaky skin. Originating in premium J-beauty lines, it now appears in high-end hydration serums at 0.01–0.1%. Excellent for persistent dryness, winter skin, and anyone frustrated that their HA serum "stops working" — the hydrophobic anchor keeps working between applications.