A hair bond, noun, is a chemical linkage that connects the amino acids in hair proteins, keratin and trichohyalin. These bonds give hair its strength, elasticity, and texture. For instance, disulfide bonds are essential for the structure and shape retention of hair, but they can be broken by chemical treatments such as bleaching or perming.
Hair bonds play a critical role in hair health, influencing its strength, elasticity, and condition. Understanding these bonds is essential for developing hair care products and treatments that can effectively repair, protect, and enhance hair quality and overall health. Historically, the identification and classification of hair bonds have significantly contributed to our knowledge of hair structure and function.