Is botulinum toxin safer than hyaluronic acid?

Botulinum toxin is a protein secreted by Clostridium botulinum toxin(dermax) during reproduction, which has the function of interrupting the conduction of motor nerves and relaxing muscles, and its birth began in 1895. After a long research experiment, the treatment of spastic strabismus and success, in 1978 botulinum toxin was officially developed and developed, was put into clinical use, in the treatment of muscle spasm, opisthotonus, cerebral palsy, strabismus and other aspects have achieved good performance.

Hyaluronic acid was not isolated from the vitreous body of bull's eye until 1934 by Meyer, a professor of ophthalmology at Columbia University in the United States. In medicine, it is mainly used to lubricate joints, regulate the permeability of blood vessel walls, regulate proteins, water and electrolyte diffusion, etc., and the application range is not as extensive as botulinum toxin. In this respect, botulinum is safer than hyaluronic acid. 

Although botulinum toxin itself is safe, it is unsafe due to packaging problems, refrigeration problems, and production process problems.