What effects can excessive heat from styling tools have on hair?

Excessive heat from styling tools can lead to hair damage and breakage due to the high temperatures that can alter the hair's protein structure. When hair is subjected to heat beyond its tolerance level, the protective cuticle layer can become compromised. This can result in moisture loss, leaving the hair dry and brittle. The hair may also experience weakened bonds within its structure, leading to increased susceptibility to breakage. Over time, repeated exposure to high heat can exacerbate these issues, making it critical for individuals to use styling tools at appropriate heat settings and incorporate protective measures, such as heat protectants, to minimize damage and maintain hair integrity.