What is the effect of using too much heat on hair during styling?

Using too much heat on hair during styling leads to damage and brittleness. Excessive heat can alter the hair’s internal structure, weakening the protein bonds that give hair its strength and elasticity. This disruption results in the loss of moisture, leaving hair dry and brittle, which makes it more prone to breakage and split ends. Over time, continually exposing hair to high temperatures can lead to permanent damage, making it essential to use heat protectants and limit heat exposure during styling practices to maintain hair health. The other options do not accurately reflect the damaging effects of high heat on hair; for instance, increased moisture retention and hair strengthening cannot occur if the hair is damaged from heat exposure, nor does heat enhance color in a beneficial way if it compromises the hair structure.