January 2007 in “Journal of Clinical Dermatology” The topical solution increased hair count but wasn't significantly better than placebo in other measures.
April 2004 in “Inpharma Weekly” Melatonin helps hair growth in women with hair loss issues.
November 1999 in “Reactions Weekly” 
September 1998 in “Journal of The European Academy of Dermatology and Venereology” Topical 5α-reductase inhibitor helps counteract hair loss and stabilize it.
November 1996 in “Inpharma Weekly” Lotion with piroctone olamine and triclosan improves hair loss in men.
June 1990 in “Inpharma Weekly” Keep using minoxidil for hair loss, as it works better long-term.
March 1988 in “Archives of Dermatology” Topical minoxidil may not improve the appearance of balding men, according to a letter in this document.
March 1988 in “Archives of Dermatology” Minoxidil therapy can help with hair regrowth, but results vary and some people are just happy to stop further hair loss.
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July 1988 in “British journal of dermatology/British journal of dermatology, Supplement” Diphencyprone therapy can effectively treat severe hair loss in motivated patients.
January 2023 in “Vìsnik problem bìologìï ì medicini” Androgenic alopecia causes hair follicle degradation and skin restructuring, but some hair elements remain.