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What effect does excessive heat have on hair?

  1. Moisture retention

  2. Improved shine and health

  3. Dryness, brittleness, and potential breakage

  4. Bacterial growth

The correct answer is: Dryness, brittleness, and potential breakage

Excessive heat can lead to dryness, brittleness, and potential breakage of hair. When hair is exposed to high temperatures, the moisture within the hair strands can evaporate, resulting in dehydration. This lack of moisture contributes to a weakened hair structure, making it more prone to damage. Brittle hair may develop split ends and become more susceptible to breakage during styling or brushing. Overall, the integrity of the hair can be significantly compromised by heat, emphasizing the importance of using protective products and methods when styling to minimize damage.