Idaho Cosmetology Licensure Practice Exam 2025 – All-in-One Study Guide to Secure Your License Success!

Before applying a relaxer, it is essential for a cosmetologist to perform a strand test. This test involves taking a small section of hair and applying the relaxer to determine how the hair will react to the chemical treatment. It helps in assessing the hair's condition, texture, and porosity, which are crucial in deciding the appropriate processing time and whether the hair can withstand the relaxer without damage.

Performing a strand test allows the cosmetologist to gauge the relaxation level achieved and ensure that the hair will not become excessively damaged during the chemical process. This step is particularly important because hair can vary significantly in its resilience and susceptibility to chemical treatments. By doing the strand test, the cosmetologist can tailor the application process to the individual needs of the client, ensuring optimal results while minimizing potential hair damage.