That's illegal. Including botulinum toxin injection, are all medical actions, because that thing has not obtained the approval of cosmetics, only the approval of drugs, and it cannot be given to people without a prescription.

The so-called weight loss products should also be drugs. You have the right to know what is injected into your body. If you have the approval of cosmetics, cosmetics can't be injected into your body. It is drugs that directly enter the human circulatory system.