Maryland Cosmetology State Practice Exam

When should a cosmetologist recommend a patch test?

1. Before using any hair extension

2. Before performing a chemical treatment

3. Before cutting hair

4. Before applying makeup

The correct answer is: Before performing a chemical treatment

Recommending a patch test before performing a chemical treatment is essential for safety and client satisfaction. Chemical treatments often involve strong substances and can cause allergic reactions or adverse skin reactions in certain individuals. A patch test helps identify any potential allergies a client may have to the products being used, allowing the cosmetologist to take necessary precautions or select alternative products before proceeding with the treatment. In contrast, hair extensions typically involve physical application and not a chemical interaction that would warrant a patch test. Cutting hair doesn’t involve products that penetrate the skin or cause allergic reactions, so it does not require prior testing. Similarly, while makeup application can lead to reactions, it is usually not standard practice to perform patch tests unless dealing with specific products known to cause issues, making this option less relevant in the context of general procedures.