抄録
Long-lasting effect plays a crucial role in evaluating the performance of makeup products. Various film formers are used to obtain this effect, including commonly used fluorine-containing, silicone-based, and acrylic film formers. Owing to their excellent amphiphobic (lipo/hydrophobic) properties, fluorine-containing film formers possess notable long-lasting effects when compounded. However, the environmental concerns associated with the use of fluorine limit the use of fluorine-containing film formers in the cosmetics industry. Therefore, in this study, we have developed a fluorine-free new film former, namely MPC-Si polymer, possessing a biocompatible branch due to the 2-methacryloyloxyethyl phosphorylcholine (MPC). Herein, we confirmed the properties of MPC-Si polymers by the contact angle and surface free energy of the film, thereby verifying its higher amphiphobic performance than that of conventional film formers, such as fluorine-containing film formers. Additionally, MPC-Si polymers were insoluble in various solvents after film formation. This may prevent makeup deterioration, which typically occurs due to sweating or sebum secretion. In addition, the film surface was observed to be substantially flat without characteristic unevenness. The phosphorylcholine group of the polymer exists near the surface of the film, which plays an important role in the amphiphobic performance mechanism of the film. Therefore, the foundation containing MPC-Si polymer was found to have a significantly higher lipophobic performance than a fluorine-containing film former and exhibited excellent long-lasting effects and sensoriality. Furthermore, we are strongly convinced that this new proposal is one of the answers that considers environmental issues.
