Abstract
In this article, the control methods and the characterization of specific sunscreen film structure are described. To development of high water-resistant sunscreen, it was important that the film formed the minute and periodic uneven structure (MPUS) like lotus leaf. The MPUS was able to form by two methods. One method was the water immersion method and the other was the solvent evaporation method. The formation mechanism was explained by the theory of dissipative structure. It was considered that diffusion ability of the pigments and the contraction property of film by evaporation of the solvents play important role in the formation process of this structure. MPUS showed superior function of water-resistant and UV-protect. Furthermore, MPUS also had unique tensile and optical properties.
