First, learn to greet customers.
Second, we should care about customers' needs, that is, ask customers whether they feel uncomfortable after finishing beauty treatment and how they feel about themselves; Also tell customers that if they feel unwell, please call for advice first and take time to go to the store to learn more about the situation.
Third, we should consider the privacy of customers, so we should use some technical terms, but don't make customers feel too abrupt.
The fourth is to guide customers to visit the store within a certain period of time in order to understand the curative effect and further solve the existing problems.