A beautician and a masseur are completely different concepts. Masseurs only need to know the technology, and beauticians have to be more demanding. In addition to knowing technology, he also needs to know specialties, such as the basic knowledge of dermatology and the foundation of consumer psychology. At present, beauty salons have TCM health preservation, so it is necessary to understand the basic theory of TCM. It is one of your jobs to introduce some knowledge about skin care and health care to customers, not to brainwash people. As for selling products, then, as for the statement of body deformation, it is even more unfounded. If a beautician can't even manage his body and skin well, how can he convince customers!