Missouri Board of Cosmetology Practice Exam

What is a common effect of using thermal styling tools on hair?

1. Improved shine

2. Heat damage

3. Increased volume

4. Enhanced color

The correct answer is: Heat damage

Using thermal styling tools such as flat irons, curling wands, and blow dryers can lead to heat damage in hair. This damage occurs when hair is exposed to high temperatures for extended periods, causing the cuticle (the outer protective layer of hair) to become weakened or even burned. As a result, the hair may lose moisture, elasticity, and overall vitality, leading to issues like breakage, split ends, and dullness. While some may seek benefits like improved shine, increased volume, or enhanced color from thermal styling, these desired effects can often be overshadowed by the long-term consequences of heat exposure. Understanding this common effect is crucial for anyone in the cosmetology field, as it emphasizes the need for appropriate heat protection strategies, such as using heat protectant products and practicing moderation in styling techniques.