What is the purpose of a patch test?

The purpose of a patch test is primarily to check for allergic reactions to products. This is crucial in beauty therapy, as many clients may have sensitivities or allergies to specific ingredients commonly found in cosmetics and skincare products. Performing a patch test involves applying a small amount of the product on a less visible area of the skin to observe any potential adverse reactions, such as redness, itching, or swelling, over a 24 to 48-hour period. By identifying any allergies beforehand, therapists can ensure the safety and comfort of their clients, preventing harmful reactions during treatments.

Other options do not align with the primary purpose of a patch test. While promoting product sales or determining skin type are relevant to beauty therapy, they do not directly address the critical concern of ensuring client safety regarding allergic reactions. Additionally, evaluating the effectiveness of a treatment is typically done through different methods, such as client feedback or follow-up assessments, rather than a simple patch test.