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Biology and Physiology of Hair Growth

  • Pierre Bouhanna
  • Jean-Claude Dardour

Abstract

Hair growth is effected by multiplication of the generative cells of the root, the mitotic activity of which varies from one cycle to another. The average growth of the scalp hair, which is faster than that of hair elsewhere, is from 0.35 to 0.45 mm/24 h, i.e. over 1 cm a month. This growth varies with sex (it is faster in women) and with the scalp region (growth is faster at the vertex than at the temples). Again, it seems to be subject to seasonal rhythms, being greater in winter than in summer and more marked during the day than at night.

Keywords

Hair Follicle Hair Growth Scalp Hair Intrauterine Life Anagenic Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • Pierre Bouhanna
    • 1
  • Jean-Claude Dardour
    • 2
  1. 1.ParisFrance
  2. 2.ParisFrance

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