131 citations,
July 2009 in “Experimental Dermatology” The document concludes that specific cells are essential for hair growth and more research is needed to understand how to maintain their hair-inducing properties.
116 citations,
September 2001 in “Journal of The American Academy of Dermatology” Hair loss occurs due to fewer papillary cells, smaller follicles, and shorter growth phases.
50 citations,
November 2010 in “Plastic and Reconstructive Surgery” Botox increased hair count in men with baldness and might work by improving scalp blood flow.
[object Object] 
48 citations,
February 2017 in “Journal of Cosmetic Dermatology” The conclusion is to use scalp cooling, gentle hair care, and treatments like minoxidil for managing hair loss from chemotherapy, and stresses the need for more research and collaboration in this area.
43 citations,
August 2008 in “Regenerative Medicine” Scientists created early-stage hairs from mouse cells that grew into normal, pigmented hair when implanted into other mice.
34 citations,
January 2018 in “International Journal of Dermatology” Scalp cooling is the most effective FDA-approved method to prevent chemotherapy-induced hair loss, but more research is needed for other treatments.
31 citations,
February 2020 in “BioMed Research International” Thai people's hair density decreases with age and varies by scalp area, but hair thickness stays the same regardless of age or scalp area.
31 citations,
February 2014 in “Inflammation Research” Lower CD200R1 on certain immune cells is linked to more severe rheumatoid arthritis and immune imbalance.
30 citations,
October 2016 in “Current research in translational medicine” Hair follicles on the scalp interact with and respond to the nervous system, influencing their own behavior and growth.
[object Object] 
27 citations,
January 2020 in “Experimental Dermatology” Immune cells affect hair growth and could lead to new hair loss treatments.