Idaho Cosmetology Licensure Practice Exam

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What is the purpose of a patch test in hair coloring?

To choose the right hair color

To check for allergic reactions to the dye

The purpose of a patch test in hair coloring is primarily to check for allergic reactions to the dye. This is an important step because many hair coloring products contain chemicals that can potentially cause an allergic response in some individuals. By conducting a patch test, typically performed 48 hours before applying the color to the entire head, the cosmetologist can observe any adverse reactions, such as redness, swelling, or irritation, at the test site. This precautionary measure ensures the safety of the client and helps to prevent any unexpected complications during the hair coloring process. It's a standard practice aimed at promoting health and well-being in salon services.

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To determine the color's longevity

To assess the client's hair texture

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