How do chemical relaxers work?

Chemical relaxers work by altering the hair's internal structure to straighten it. This process involves the use of specific chemicals, such as sodium hydroxide or ammonium thioglycolate, which break down the disulfide bonds in the hair. These bonds are responsible for the natural curl and wave pattern of the hair. Once these bonds are broken, the hair can be rearranged and straightened, allowing it to assume a new, smoother shape.

The effectiveness of chemical relaxers lies in their ability to penetrate the hair shaft and modify its structure, which is essential for achieving long-lasting straightness. This transformation is particularly beneficial for individuals with naturally curly or wavy hair who desire a sleeker look.

Other options like coating the hair with a protective layer, adding moisture, or changing hair color do not describe the primary function of chemical relaxers, as they do not directly alter the internal structure for the purpose of straightening. Thus, the primary mechanism of action for chemical relaxers focuses on modifying the hair's internal bonds rather than simply affecting its outer appearance or color.