It is permissible to use botox if it is free from harm, because Prophet Muhammad said: “There should be neither harm nor reciprocating harm.”

It is permissible to remove the corneas from a person after his death has been confirmed, and to implant them in the eye of a Muslim person who needs them, if it is thought most likely that the operation will be successful, and so long as the next of kin (of the deceased) do not object.