Current players in this market are AGN (Botox), VRX/Ipsen (Dysport), and Merz (Xeomin); Botox has about an 80% worldwide combined market share in all applications (medical and cosmetic).
JNJ has a Botox-like product in phase-3 called PurTox (see #msg-85982909 and ensuing Reply chain).
Galderma, which also owns the rights to the Restylane family of dermal fillers, is a 50/50 JV of Nestlé and L’Oreal.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”