Tennessee Barber Practice Exam

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What is the main component of permanent wave solutions?

Hydrogen peroxide
Ammonium thioglycolate
Calcium carbonate
Glyceryl monostearate

The correct answer is: Ammonium thioglycolate

The main component of permanent wave solutions is ammonium thioglycolate. This chemical acts as a reducing agent that helps to break the disulfide bonds in the hair's keratin structure, allowing the hair to be reshaped and set into curls or waves. When the permanent wave solution is applied, the hair is softened and can be molded into the desired shape. Once the hair is set in the desired configuration, a neutralizer is used to reform the disulfide bonds so that the new shape is retained. This unique ability of ammonium thioglycolate to chemically alter the structure of the hair makes it essential in the permanent waving process. Other options like hydrogen peroxide, calcium carbonate, and glyceryl monostearate may have their uses in hair treatments or other cosmetic applications, but they do not serve as the primary active ingredient for the process of creating permanent waves.