According to current statistics, the average client will stay with you three to five years. In the business of customer service it is important to be aware of what causes tour clients to change salons and spas and/ or technicians. To keep up to date, a technician must practice the new techniques of hairstyling and haircutting. Good cosmetology schools, on the other hand, have the time to experiment with new styling techniques. Trained instructors stand ready to assist the willing technicians with styling in the latest trends. These instructors make a business of creating hairstyles that keep up with the trends.