Perhaps the biggest caveat is that, because this treatment goes by many names, it can mean different things for different injectors. Where one doctor might stick to subdermal injections just at the surface level of the skin for a patient who wants to reduce sweat (similar to an armpit injection) or oil, another might go a little deeper to also lightly paralyze the muscle for added fine-line reduction. Like all parts of dermatology, it’s not an exact science, so it’s very important to ask questions, do your research, and ultimately make sure you and your injector are on the same page about your goals.