TLDR Certain types of human hair might help ultraviolet rays reach and damage cells, possibly leading to melanoma.
This review explored the hypothesis that certain types of human hair might contribute to melanoma development by transmitting ultraviolet rays along the hair shaft, potentially damaging stem cells in the hair follicle. It summarized experimental studies on the optical properties of human hair, including sample preparation, measurement techniques, and results. The paper also discussed Monte Carlo photon simulations of human hair and highlighted the need for further research to support the hypothesis that hair could play a role in melanoma development due to its optical properties.
87 citations
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July 2009 in “The journal of investigative dermatology/Journal of investigative dermatology” Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.
759 citations
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February 2009 in “Current Biology” Hair follicles are complex, dynamic mini-organs that help us understand cell growth, death, migration, and differentiation, as well as tissue regeneration and tumor biology.
344 citations
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June 2006 in “American Journal Of Pathology” 
24 citations
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January 2006 in “Dermatologic clinics” Hair sunscreens are important for maintaining hair's cosmetic value.
38 citations
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June 2003 in “Journal of Investigative Dermatology Symposium Proceedings” Accurate clinical, histological, and genetic methods are key for understanding and treating hair disorders.
16 citations
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January 1977
August 2024 in “Applied Sciences” Plant extracts may help prevent or reverse hair graying.
2 citations
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August 2023 in “Marine drugs” Collagen from tilapia scales may improve hair and skin health by reducing stress and inflammation and encouraging hair growth.
240 citations
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April 2011 in “Pigment Cell & Melanoma Research” Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.
October 2025 in “Phytomedicine” Bazi Bushen capsules reduce skin aging and damage from UV rays.
1 citations
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November 2014 in “Elsevier eBooks” Future research should focus on making bioengineered skin that completely restores all skin functions.
