Transdermal Delivery of Hyaluronan Tetrasaccharide by Constant Current Iontophoresis

Ascorbic Acid 2-Glucoside (AA2G), l-ascorbic acid derivatives, is provided whitening, anti-oxidation effect and more stable in physicochemical properties. AA2G used in the cosmetic industrial area, however, it hydrophilic character caused lower ability across stratum corneum to the skin, the whitening effect was limited. A microemulsions is the best choice in the study due to the scale up easily in the cosmetic industrial. We aim to optimized microemulsion formulation which easily preparation and stabilized in the cosmetic industrial and enhance the penetration ability into skin simultaneous remain lightening effect. AA2G microemulsion was prepared archive approximately 150 nm. The results showed that the AA2G microemulsion has powerful permeation ability and high skin deposition when compared with the AA2G aqueous control solution and the commercial emulsion product (p