55 citations,
March 1990 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride may treat baldness but less effective for those with 5α-reductase deficiency.
147 citations,
April 1990 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride safely lowers DHT levels without affecting testosterone.
70 citations,
April 1990 in “Journal of The American Academy of Dermatology” Minoxidil treatment increased hair growth for up to 5 years, requiring twice daily application.
1 citations,
May 2011 in “Journal of Human Reproductive Sciences” Finasteride may decrease semen quality but not harm sperm production, and stopping the drug can improve semen quality; hyperprolactinemia can cause infertility but is treatable with medication.
20 citations,
January 1990 in “Journal of dermatological treatment” Ketoconazole shampoo treats dandruff and reduces hair greasiness.
18 citations,
June 2002 in “BJUI” Finasteride doesn't change rat testicle weight or sperm production.
January 1989 in “Journal of The American Academy of Dermatology” Dr. Jorizzo questions the long-term benefits of minoxidil and tretinoin, while Dr. Olsen defends their effectiveness and stresses the need for public education on these treatments.
20 citations,
January 2004 in “PubMed” 
86 citations,
June 2017 in “Stem cell investigation” Stem cells from hair follicles can safely treat hair loss.
January 1989 in “Journal of The American Academy of Dermatology” Psoriasis patients have immune cells that respond more strongly to signals and stimuli due to an intrinsic cellular defect.