New Jersey Cosmetology and Hairstyling Practice Exam 2025 - Free Cosmetology and Hairstyling Practice Questions and Study Guide

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What type of hair product is used to break down the protein structure of hair?

Conditioners

Shampoos

Chemical relaxers

Chemical relaxers are specifically formulated to break down the protein structure of hair. These products contain active ingredients, such as sodium hydroxide or ammonium thioglycolate, which alter the hair's natural protein bonds, particularly the disulfide bonds. This process helps to relax and straighten curly or wavy hair by reshaping the hair shaft.

Conditioners, shampoos, and hair sprays serve different functions. Conditioners primarily focus on moisturizing and smoothing hair, shampoos are designed for cleansing the hair and scalp, and hair sprays are used for styling purposes to hold hair in place. None of these products are intended to chemically alter or break down the protein structure like chemical relaxers do. Thus, the choice of chemical relaxers as the correct answer reflects their unique role in altering the hair's structure for styling purposes.

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Hair sprays

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