What is the result of excessive heat on hair?

Excessive heat can cause significant damage to hair because it alters the hair's protein structure. When hair is exposed to high temperatures, such as during the use of heated styling tools like flat irons, curling wands, or blow dryers, the outer layer of the hair cuticle becomes compromised. This leads to a breakdown of moisture, resulting in dryness. When the hair lacks moisture, it becomes brittle and more prone to breakage. The damage manifests as split ends, a rough texture, and an overall lack of vitality and elasticity. Therefore, the consequences of excessive heat on hair are clear, making damage, dryness, and breakage the accurate result.