Providing treatment to clients requires knowledge of hygiene, anatomy and physiology, and skin histology. In order to provide quality care for their clients, beauty therapists must know about the ingredients

used in cosmetics, and about products, skincare methods and beauty equipment and how they affect the skin and body. Giving advice on skincare requires knowledge of nutritional science, the importance of exercise, skin conditions and hygiene. Beauty therapists must also demonstrate understanding of how electrical devices work in order to avoid endangering customers' health and safety when applying treatments.

Beauty therapists work in close contact with clients from different age groups and backgrounds. Good social and interpersonal skills, discretion and respect for others are important characteristics for those working in customer services and skincare. People working in the beauty industry must also be able to interpret the wishes and needs of those customers who might have difficulty in expressing them.

Beauty therapist professionals work together with fashion, media, hairdressing and healthcare professionals. Beauty therapists follow the industry's developments in their own country and abroad and continuously update and develop their knowledge and professional skills. Learning to become skilled at and lifelong education are crucial in order to develop one's career and skills. These days, a positive attitude towards new technology and its applications is important. A beauty therapist must be in good health and able to deal with physical stress, particularly on the body's locomotive system. A balanced lifestyle and regular exercise help beauty care professionals to cope with the stresses of their work.