Hair Biology: An Update

February 2002 in “ International Journal of Cosmetic Science ”

Bruno Bernard

hair follicle growth cycle regeneration cycle tissue organization regulatory network hair growth pigmentation tissue homeostasis dermal-epithelial crosstalk molecular signals

TLDR Recent findings show that hair growth and color are controlled by a complex network of signals in the hair follicle.

The document "Hair biology: an update" from 2002 by B. A. Bernard, presented at the 2001 Society of Cosmetic Scientists Spring Symposium, discussed the recent findings in the field of hair biology at the time. The author highlighted the hair follicle's unique growth and regeneration cycle, its complex tissue organization, and the intricate regulatory network that controls hair growth and pigmentation. The hair follicle was described as a paradigm of tissue homeostasis and dermal-epithelial crosstalk, emphasizing the diversity of molecular signals involved in hair growth and pigmentation.

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Research cited in this study

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Androgens can cause hair growth in some areas and hair loss on the scalp.

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Growth factors can either promote or inhibit hair follicle cell growth and collagen breakdown.

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Human hair follicles can grow in a lab setting.

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