Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
January 2005 in “Fuzhou daxue xuebao. Ziran kexue ban” The method is quick and effective for testing steroid 5 alpha-reductase inhibitors.
August 1989 in “Proceedings ... annual meeting, Electron Microscopy Society of America/Proceedings, annual meeting, Electron Microscopy Society of America” The research provided a detailed view of the non-keratinous parts of human hair fibers.
February 1989 in “PubMed” A genetic hair protein variant is more common in Japanese people and is inherited.
December 2021 in “Biomarkers” Men with early baldness have similar heart risk factors as others, but certain proteins are linked to higher heart disease risk.
September 2019 in “Clinical research in practice” High-dose finasteride effectively treats hair loss in postmenopausal women.
January 2019 in “Journal of the Egyptian Women's Dermatologic Society (Print)” People with androgenetic alopecia have a higher risk of heart disease.
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August 2020 in “Journal of the American Geriatrics Society” Most adults over 70 have skin diseases needing treatment, with men more affected than women.
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September 1990 in “Proceedings of the National Academy of Sciences” The study showed that a specific DNA sequence can control gene expression in hair growth areas of mice.