The Twin Transition is gaining increasing relevance in the manufacturing sector as it strives to implement and exploit digital technologies to improve the Environmental Sustainability of companies. This topic holds particular relevance in the Cosmetic Industry. However, cosmetics companies, especially Small and Medium Enterprises, encounter challenges in effectively implementing digital technologies. This results in a substantial gap between the theoretical potential of the Twin Transition and the practical implementations. To fill the gap, a key role might be played by assessment and roadmapping tools that provide companies with the help and support they need. In this contribution a novel assessment and roadmapping tool is proposed. The employed methodology combines a systematic literature review with Action research approach. The proposed tool is called the Twin Transition Cosmetic Roadmapping Tool. It supports enterprises in the assessment of their current level of Twin Transition based on which a roadmap for improvement is framed. It is the first Twin Transition roadmapping tool specific for cosmetics industry. Furthermore, it encompasses all the mechanisms by which Twin Transition can be achieved throughout the entire product life cycle. The paper concludes with an application of the tool in an industrial case study, presenting and discussing the results. •A novel assessment and roadmapping tool supporting cosmetics manufacturing companies in Twin Transition is proposed.•It is the first tool supporting Twin Transition in a punctual way tailored for cosmetics industry.•The methodology is an innovative approach integrating systematic literature review and Action research.•A demonstration case in a real cosmetic medium enterprise is described.