South Dakota Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Heat applied during styling primarily affects the shape and texture of the hair temporarily. When heat is used, such as through curling irons, straighteners, or blow dryers, it alters the hydrogen bonds within the hair structure, allowing the strands to bend, curl, or straighten. This thermally induced change provides versatility in styling, enabling a variety of looks based on the heat application.

The effects of heat are indeed temporary; once the hair cools down, it typically returns to its original state, unless styling products that provide additional hold are utilized. Knowing this helps in understanding how to achieve desired styles while keeping the overall health of the hair in mind. Moderation and proper techniques like using heat protectants can help minimize potential negative effects on hair health.

In contrast, while it's true that excessive or repeated heat styling can lead to damage over time, the immediate effect of heat is transient, making the option highlighting temporary changes in shape and texture the most accurate answer.