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21 September, 04:14

Why does hair shorten when humidity decrease

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Answers (2)
  1. 21 September, 07:22
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    Well, when humidity increases, the hair relaxes, so it gets longer, and when it decreases, the hair tightens, getting shorter.
  2. 21 September, 07:41
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    The higher level of hydrogen bonds in humid air lead to a creation of more hydrogen bonds in adjacent molecules in the hair strand
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