September 2025 in “Tạp chí Da liễu học Việt Nam” 2.5 mg/mL TAC is as effective and safe as 5 mg/mL, but 5 mg/mL may improve hair regrowth and density more.
18 citations
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July 2016 in “Medicine” Wnt/β-catenin and TGF-β pathways affect hair loss, and activating Wnt/β-catenin could be a potential treatment.
Caffeine in Alpecin shampoo may help prolong hair root activity and reduce hair loss.
Baricitinib helped treat a man's beard hair loss when steroids didn't work.
2 citations
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June 2022 in “Molecules” Connarus semidecandrus Jack extract promotes hair growth and thickness, reduces prostate cancer cell growth, and could potentially be used as a treatment for hair loss.
October 2025 in “Figshare” Deuruxolitinib improves hair regrowth in alopecia areata but needs more safety research.
Ritlecitinib significantly regrows scalp hair in people with alopecia areata.
1 citations
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January 1997 in “Journal of Investigative Dermatology” RU58841, an androgen receptor blocker, significantly increased hair density, thickness, and length in monkeys when applied topically daily for several months.
29 citations
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February 2003 in “Journal of Dermatology” Spironolactone may help enlarge a small breast linked to Becker's nevus.
March 2026 in “Brazilian Journal of Animal and Environmental Research” Deslorelin can help control reproduction and improve hair growth in German Spitz dogs.