Which of the following is an essential safety step when mixing and applying permanent wave solutions?

• A. Reading a magazine during service
• B. Patch test
• C. Wearing shoes with untied laces
• D. Eating a snack while mixing

Answer: (B)

The essential safety step is performing a patch test. This check screens for allergic or adverse reactions to the chemicals in the permanent wave solution before you apply it to the scalp. By placing a small amount of the product on a discreet area of skin (often behind the ear or on the inside of the elbow) and waiting 24–48 hours, you can see if the client tolerates the ingredients. If a reaction occurs, you can adjust or avoid the service to prevent burns, dermatitis, or more serious harm. Other activities like reading a magazine during the service, wearing untied shoes, or eating while mixing do not provide any safety protection and can introduce distractions or hazards. So a patch test is the best, essential step to help ensure client safety when working with chemical waving solutions.