It's definitely useless to learn technology and go to a training class. It is not recommended to go to a beauty salon to learn technology. Beauty salons can hardly learn anything, and beauticians have little time to teach you. There are some clients to take care of and no time to teach you. At best, they just teach you some facial care skills. Let you deal with customers quickly, but what I teach you most is how to sell products.
If the technology is not good, sell it. There won't be good customers, and your skills are not good, your performance is not good, your salary is definitely low, your boss is picky, and you can't make money that month.
Waste time in vain. If you want to study, go to a professional skin management school. Be sure to choose a regular school. I have formal qualifications for running a school and must go to school to hand over. I have seen with my own eyes that the curriculum is incomplete, and we should fully understand the school environment, school qualifications and teaching staff. When I study, it usually takes two to four months.