Research on the Mechanism of Hair Dyeing Agents and Strategies for Health Risks Reduction

Hair dye is a type of special-purpose cosmetic designed to alter hair color and is classified as a special-purpose cosmetic. Its core function is to impart color to hair via chemical or physical mechanisms. In a broad sense, all products aimed at changing hair color fall under the category of hair dye. Analyses and experiments on hair dyes of different brands, colors, and types can be conducted to assess their potential harm to the human body. Such harm includes sensitization and carcinogenicity. Overall, the adverse effects of hair dyes on the human body are not inevitable and vary with individual physiological constitution. This study aims to explore the allergenicity and harmfulness of hair dyes by investigating scenarios in daily life.