Start-up, Bonti seeks short-acting botulinum toxin—(but not for the reason recently cited by AGN executive): https://www.wsj.com/articles/former-botox-bosses-raise-15-5-million-for-biotech-startup-bonti-1516745274 Bonti says its botulinum neurotoxin takes action within 24 hours, and is effective for three to four weeks. This profile makes it suitable for uses such as treating postsurgical and nonsurgical musculoskeletal pain, according to the company, which is based in Newport Beach, Calif.