April 2021   in “Journal of Investigative Dermatology”    An AI photographic device effectively tracked hair growth improvements in women treated for hair loss.  
     
           April 2021   in “The journal of investigative dermatology/Journal of investigative dermatology”    6.1% of patients seeking PRP for hair loss had undiagnosed cicatricial alopecia, which PRP cannot treat.  
     
           56 citations
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  November 2010   in “Pigment Cell & Melanoma Research”    Brain hormones significantly affect hair color and could potentially be used to prevent or reverse grey hair.  
     
           159 citations
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  December 2007   in “American Journal of Pathology”    Stress-related substance P may lead to hair loss and negatively affect hair growth.  
     
           36 citations
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  April 2018   in “Journal of Investigative Dermatology”    Macrophages help hair growth after injury through CX3CR1 and TGF-β1.