Abstract: In this article different types of ultradeformable liposomes were designed and the properties of transdermal delivery were studied with sodium salicylate as model drug. These results showed that liposomes with strong hydrophilic surfactant added is a new type of penetration enhancer.

Key words: Ultradeformable liposomes, Ultradeformable liposomes, Surfactants, Surfactants, Sodium salicylate, Sodium salicylate