Message design is the planned process of creating communication that can influence knowledge, attitudes, and behaviour among individuals or communities. In Social and Behaviour Change, messages are designed according to the needs, beliefs, literacy level, culture, and motivation of the target audience. Different approaches to message design are used depending on the objective of communication and the nature of behaviour to be changed. The informative approach focuses on providing clear and accurate facts so that people can make informed decisions. It is useful when the audience lacks knowledge. For example, a health campaign may state that washing hands with soap for twenty seconds reduces the spread of infections. This approach uses simple language, statistics, and practical instructions. The persuasive approach aims to influence attitudes and motivate