Application of Multi-Diamond Processing Model to Hairstyling

In 2003, the British Design Council advocated for strategic design and its management. They researched ways to create a universal framework for describing the design process and came up with the Double Diamond Model, which became a part of the universal design language. The Double Diamond Model applies to innovation and problem-solving involving divergence and convergence at four stages: Discover, Define, Develop, and Deliver. Continuous divergence, convergence, and iteration are necessary at each stage of the design process. Therefore, we reinterpreted design process methods to optimize and apply the entire design process in various fields. A case study applying the Multi-Diamond Model to users' experiences during a hairstyling appointment was conducted to understand user needs and behavioral differences. Users' behaviors and their understanding of hairstyling were analyzed by employing the fuzzy comprehensive evaluation method to choose hairstyles that were suitable for various face shapes at different perceived difficulty levels.