: This includes board-certified dermatologists, plastic surgeons, and general practitioners who have completed specific training.

Licensed providers must source products from authorized distributors to guarantee that the vials have been stored in a continuous cold chain (typically 2–8°C) and are not counterfeit.

: Large medical supply companies such as McKesson , Cardinal Health , and ASD Healthcare are primary sources for hospitals and clinics.

: Manufacturers like AbbVie/Allergan (Botox), Ipsen (Dysport), and Merz (Xeomin) sell directly to verified medical practices.

Purchasing authority is strictly regulated to ensure patient safety and product efficacy. Legally, only the following groups can buy these products: