I'm looking into it this time, and
 a director on YouTube said that he absolutely does not recommend it,
 but there are more people who are dissatisfied than satisfied. They say that
 if you're going to do it, just get a double chin. It's not like your face is dry.
 However, one of my acquaintances who has had black lipstick for a year is completely satisfied.
 If this happens for 3 to 5 years after inhalation, will there be side effects such as fat gain or breast fat??

First of all, I contoured about 6 years ago, and there are some parts that I am satisfied with, but there are also parts that I am dissatisfied with (bulldog-like fat, nasolabial folds, sagging cheeks, disappearance of the side jaw line);
I'm sure everyone who has facial contouring will agree, but I'm trying to breathe because of these sagging skin. But I'm worried that it might be poisonous, so if you try
 breathing on my face and have any regrets, please reply.