August 2021 in “International Journal of Dermatology and Venereology” Platelet-Rich Fibrin (PRF) can speed up healing in chronic wounds, improve hair density, and act as a natural filler for skin rejuvenation, but its use in hair loss treatment needs more evaluation.
April 2021 in “International journal of advanced ayurveda, yoga, unani, siddha and homeopathy” Homeopathy can effectively treat hair loss and promote regrowth.
[object Object] October 2020 in “Stem cells” The document concludes that DNA methylation and the mTOR pathway are important for stem cell function and could impact disease treatment.
January 2022 in “Aesthetic surgery journal” Extracellular vesicles may effectively treat hair loss with minimal side effects.
August 2020 in “Rossiiskii Zhurnal Kozhnykh i Venericheskikh Boleznei” PRP therapy is a promising and well-tolerated treatment for hair loss.
January 2020 in “Springer eBooks” 
351 citations,
February 2010 in “Nature Cell Biology” Basal cell carcinoma mostly starts from cells in the upper skin layers, not hair follicle stem cells.
81 citations,
May 2007 in “Fertility and Sterility” Testosterone therapy seems safe for postmenopausal women for a few years, but more research is needed for long-term effects.
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25 citations,
September 2010 in “Journal of Cutaneous Medicine and Surgery” The study found that Central Centrifugal Cicatricial Alopecia mainly affects middle-aged African descent women, is linked to certain hair care practices and genetics, and often goes undiagnosed for years.
May 2009 in “The American Journal of Dermatopathology” Mast cells play a significant role in hair loss conditions like male pattern hair loss and alopecia areata.