Maryland Barber State Practice Exam 2025 – The All-in-One Guide to Master Your Licensing Exam!

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What does a patch test determine when using hair color?

Client's hair type

Client's allergic reaction

A patch test is a crucial procedure performed before applying hair color to determine whether a client has an allergic reaction to the chemical components in the dye. During the patch test, a small amount of the hair color is applied to a specific area of the skin, typically behind the ear or on the inner elbow, and left for a set amount of time to observe any adverse skin reactions, such as redness, itching, or swelling. This helps ensure the client's safety, as allergic reactions can lead to serious dermatological issues or health complications.

Understanding the client's hair type, the effectiveness of the color, or the longevity of the dye are important factors in hair treatment but are not the purpose of a patch test. The primary goal is to proactively identify any allergies to prevent potential harm to the client during the coloring process.

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Effectiveness of color

Longevity of the dye

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