What is a common ingredient found in hair relaxers?

Sodium hydroxide is a common ingredient found in hair relaxers, particularly in those formulations designed for more resistant hair types. This compound works as a strong alkali, which helps to break down the protein structure of the hair, effectively relaxing the natural curls or waves. When sodium hydroxide is used, it hydrolyzes the disulfide bonds in the hair, allowing for a straighter texture. This ingredient is typically included in formulations aimed at providing more lasting results for individuals who desire significant straightening effects.

In contrast, while hydrogen peroxide can be found in hair coloring products and ammonium thioglycolate is mainly used in perming solutions, they are not standard in traditional hair relaxers. Coconut oil, though beneficial for moisturizing and strengthening hair, is not a chemical agent that alters hair structure in the way sodium hydroxide does during the relaxing process. Therefore, sodium hydroxide is identified as the key ingredient for achieving hair relaxation.