모발 코팅제를 도포한 버진 헤어의 물리적 성질 연구

Abstract

As people's interest in appearance grows daily, the beauty industry—encompassing hair care, makeup, and nail care—is advancing rapidly. Individuals are increasingly emphasizing beauty through unique hairstyles and a variety of hair colors. However, physical and chemical treatments inevitably damage hair, making protection and restoration essential. This study aims to provide data on the effects and efficacy of hair by analyzing various morphological changes in virgin hair before and after the application of a hair coating agent. The results indicate that virgin hair treated with a hair coating agent exhibited lower values for Max Load, Max Stress, Break Load, and Break Stress compared to the control group. In contrast, Max Elongation and Break Elongation tended to be higher than those in the control group. The Max modulus values over the evaluation period showed a decrease in the experimental group compared to the control group. Thus, the results suggest that the hair treated with the hair coating agent displayed mechanical characteristics akin to those of damaged hair, in comparison to the control group that did not receive the treatment. Unlike permanent hair dyes, this does not contain alkalis or hydrogen peroxide, but when hair coating agents composed of numerous other chemical components are applied to virgin hair, it can be seen that the physical properties of healthy virgin hair, such as tensile strength, elongation, and elasticity, are weakened, which is worth considering when evaluating the hair coating function of semi-permanent dyes. This study is expected to serve as foundational data for developing effective hair coating agents aimed at protecting hair and enhancing hair color.