12 years old armpit odor is able to get armpit odor injection, only the general armpit odor injection maintenance time is about six months, may need to repeat the injection. Armpit deodorant injection is mainly injected with botulinum toxin, and there is no clear age limit, but botulinum toxin has a greater impact on the nerves, and if frequently injected may lead to nerve numbness. Armpit odor is usually manifested as excessive sweating and heavy odor, so it is easy to lead to the growth of various bacteria and other skin diseases. When the secretion function of sweat glands is abnormal, it may lead to armpit odor. The reason why armpit deodorant injection can treat armpit deodorant is that when Botox is injected into the sweat glands, the secretion function of the sweat glands will be weakened, so it can treat armpit deodorant. Since there are certain side effects associated with armpit odor injections, patients are advised to visit a hospital in time for regular treatment.