Ace the Michigan Cosmetology Exam 2025 – Style Your Way to Success!

Sodium hydroxide is commonly used in the process of straightening hair, specifically in a method known as "lye relaxers." This strong alkaline compound works by altering the hair's protein structure, effectively breaking down the bonds that create curls and waves. When applied to hair, sodium hydroxide allows the hair to be re-shaped and straightened.

This chemical reaction occurs because sodium hydroxide raises the pH of the hair, making it more pliable. Hair's natural curl pattern can be relaxed, leading to a smoother and straighter appearance. The effectiveness of sodium hydroxide in hair straightening is well-documented, making it a go-to choice for many cosmetologists when performing chemical relaxations.

In contrast, the other chemicals listed, like ammonia, hydrogen peroxide, and alcohol, serve different purposes in hair care and styling processes. Ammonia is commonly found in hair dyes and certain relaxers but is not the primary agent for straightening. Hydrogen peroxide is primarily used as a bleaching agent, while alcohol serves as a solvent or drying agent in various hair products, but is not used for straightening hair. Each of these alternatives has its unique properties and applications within the field of cosmetology, but sodium hydroxide stands out specifically for