Communication involves sending and receiving messages through various channels. There are four main channels of communication: verbal spoken communication including listening; non-verbal visual communication such as signs and symbols; written communication; and body language. Effective communication occurs when the message is received as intended. In a salon, the key people an assistant needs to communicate with include clients, stylists, and other staff. The most commonly used channels are verbal spoken communication and non-verbal body language. Ensuring effective communication is important for providing good customer service in a salon.