What is the effect of using too much heat during a styling session?

Using too much heat during a styling session can cause hair to become brittle and damaged because excessive heat can strip the hair of its natural moisture and weaken its structure. Hair has a protein called keratin, which can be compromised under high temperatures. When heat exceeds the hair's tolerance, it can lead to cuticle damage, resulting in frizz, split ends, and an overall unhealthy appearance. Additionally, the hair may lose its elasticity, making it more prone to breakage. Therefore, moderation is essential when applying heat to ensure the health and integrity of the hair are maintained.