Montana Barber Practice Exam

Excessive heat from a hairdryer can lead to hair damage and dryness primarily because high temperatures strip moisture from the hair, making it brittle and prone to breakage. When hair is exposed to heat beyond its tolerance, the cuticle—protective outer layer—can become damaged, leading to a loss of its natural shine and softness. This damage may manifest as frizz, split ends, and an overall unhealthy appearance.

In contrast, while some heat can enhance curl definition and increase volume temporarily, excessive heat is detrimental and does not contribute positively to hair health. Similarly, color fading can occur due to heat exposure, but it is a secondary effect often resulting from the underlying damage caused. Therefore, it's crucial to manage heat settings and use protective products to minimize hair damage during styling.