Arizona Cosmetology Practice Exam

Which tool is used to measure the pH of a hair product?

1. A hairdryer

2. A pH meter or pH test strips

3. A comb

4. A styling brush

The correct answer is: A pH meter or pH test strips

The tool that is specifically designed to measure the pH of a hair product is a pH meter or pH test strips. Understanding pH is crucial in cosmetology because it determines the acidity or alkalinity of hair products, which can significantly impact hair health and the effectiveness of treatments. A pH meter provides a precise reading of the pH level, while pH test strips offer a quick, visual indication of acidity or alkalinity when they change color in response to the substance being tested. Hairdryers, combs, and styling brushes do not have the capability to measure pH levels; instead, they serve different functions in hair care and styling. A hairdryer is used for drying and styling hair, while a comb and styling brush help in detangling and arranging hair. Thus, they are not suitable options for pH measurement. Understanding the appropriate tools for different tasks is essential in the field of cosmetology, making the knowledge of pH measurement particularly important for developing effective hair care solutions.