Pennsylvania Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What is the purpose of a patch test before a color service?

To check for hair damage

To determine color selection

To identify allergic reactions

The purpose of a patch test before a color service is to identify allergic reactions. This step is crucial because it helps ensure the safety of the client. Hair color products often contain chemicals that can trigger allergic responses in some individuals. By conducting a patch test—usually by applying a small amount of the product on the skin, typically behind the ear or on the inner arm—practitioners can observe any adverse reactions like redness, itching, or swelling before using the product extensively on the client's hair. This preventive measure helps avoid potentially serious allergic reactions during the color service, ensuring a safe and positive experience for the client.

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To ensure proper application

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