Diseño de mangos para brochas cosméticas a partir de residuos de cuero generados en las empresas de calzado de Tungurahua.

Abstract

This research develops the design of handles for cosmetic brushes using leather waste generated by the footwear industry in the province of Tungurahua, integrating ergonomic and user-centered design criteria. The study addresses the limited ergonomic adaptation of conventional brushes and the need to transform this waste into a functional component. A mixed-methods design approach is adopted, employing structured observation, user interviews, and dimensional analysis of the product. The process is organized using the Double Diamond model, which guides the definition of requirements, formal exploration, and prototype validation. The handle is manufactured from a composite material that encapsulates leather waste in a resin matrix, selected for its stability and moldability. The presence of the leather provides texture and tactile feedback, improving grip, control, and precision. The design is based on anthropometric criteria of the hand and the pencil-like grip typical of professional makeup application. Validation demonstrated improvements in comfort, gesture control, and precision compared to conventional brushes, confirming the technical and design viability of the local proposal.