Hair growth is controlled by cell interactions and influenced by specific growth factors and hormones.
12 citations
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June 2006 in “Anais Brasileiros de Dermatologia” The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.
28 citations
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December 2015 in “Journal of biological chemistry/The Journal of biological chemistry” Prostasin has two roles in skin: one for normal skin development without needing activation, and another for proper hair growth that requires activation.
November 2025 in “Probiotics and Antimicrobial Proteins” 78 citations
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June 2003 in “Journal of the American Academy of Dermatology” Curly hair shape is determined by the hair bulb.
2 citations
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July 2018 in “Skin research and technology” Greasy hair spreads sebum twice as much as nongreasy hair over time.
14 citations
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March 2014 in “Experimental and Molecular Pathology” Sulfur mustard damages hair follicles and sebaceous glands in mice.
17 citations
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May 2022 in “Cells and Development” 5 citations
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August 2011 in “Journal of Dermatological Science” Dentin sialoprotein and phosphophoryn are present in rodent hair follicles and may help hair growth and development.
8 citations
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July 1986 in “International Journal of Dermatology” Eruptive vellus hair cysts are harmless skin bumps that may go away on their own.