research Randomized Split-Side Study Comparing Efficacy of Botulinum Toxin Type A Versus 0.9% Sodium Chloride in Scalp Psoriasis September 2023 Botulinum toxin type A significantly reduces scalp psoriasis severity compared to placebo.
research Effect of Minoxidil on Hair Growth in Minipigs May 2018 in “Journal of Investigative Dermatology” Minoxidil didn't significantly increase hair growth in minipigs.
research Treatment of Nodulocystic Acne with Once Weekly Finasteride: A Pilot Study May 2018 in “Journal of Investigative Dermatology”