Botulinum toxin-A may increase hair growth and reduce hair loss in men with baldness, and injecting near blood vessels can improve pain relief and last longer.
January 2026 in “BULLETIN OF STOMATOLOGY AND MAXILLOFACIAL SURGERY” In this randomized controlled trial, both Botulinum Toxin-A and Triamcinolone Acetonide showed substantial effectiveness in treating patchy Alopecia Areata, but Botulinum Toxin-A avoided complications while Triamcinolone led to skin atrophy in 16.7% of patients.
December 2025 in “Mendeley Data” This registered trial will investigate whether preoperative botulinum toxin can improve hair transplantation outcomes by enhancing blood flow and reducing ischemia in the scalp.
November 2025 in “Mendeley Data” This study outlines a randomized trial investigating the effects of botulinum toxin administered before hair transplantation to potentially improve outcomes by enhancing blood flow and reducing graft failure due to ischemia in androgenetic alopecia patients.
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August 2022 in “Aesthetic Surgery Journal” This study found that one session of intradermal botulinum toxin type A injection decreased scalp sebum secretion and perception of greasiness more effectively than saline for up to 3 months.