Toxin is a bacterial exotoxin produced by the propagation of Botox, which has nerve block and muscle relaxation effects and is widely used in plastic surgery, neurology, dermatology, ophthalmology and burn surgery. In general, botulinum toxin can be stored in a refrigerator at 2 to 8 degrees Celsius for several months before unsealing, while the prepared botulinum toxin should not be stored in a refrigerator at 4 degrees Celsius for more than 4 hours.