Whether you are a hair stylist, nail technician or barber, the amount of business you bring in and retain will impact the salon's financial success. If you are currently employed at another salon, expect to answer questions about how many clients you have at your job, how you retain their business, and whether they will follow you to a new salon. If you are interviewing for your first job, expect to be asked what you offer than can ensure more business. For example, you might be asked about the number of services you can perform as well as your level of expertise. A stylist who can formulate hair color and do perms and hair extensions is more valuable than a barber who only cuts hair.