New Mexico Cosmetology Practice Exam

Which of the following is a common cause of hair damage?

1. Frequent haircuts

2. Excessive heat styling

3. Proper conditioning

4. Natural sun exposure

The correct answer is: Excessive heat styling

Excessive heat styling is a common cause of hair damage because high temperatures can break down the protein structure of the hair, leading to brittleness, split ends, and overall loss of moisture and shine. Hair styling tools like flat irons, curling wands, and blow dryers often reach temperatures that can strip the hair of its natural oils, making it more susceptible to breakage and damage over time. Regular use of heat without adequate protection can lead to cumulative harm, reinforcing the need for protective products and techniques. In contrast, frequent haircuts can actually promote healthy hair by removing split ends, and proper conditioning helps to nourish and protect the hair, counteracting damage instead of causing it. While natural sun exposure can contribute to fading and dryness, it is not as significant a factor for damage as excessive heat styling.