Colourism is the discriminatory practice of favoring lighter skin over darker skin. It perpetuates social disparities and drives skin-lightening products (SLP) use globally, including in Malaysia. This study presents the results of an innovative 3 week online training course designed to equip health professionals and educators who work with youth in Malaysia with the knowledge and skills to combat colourism and the use of dangerous SLPs through strategic storytelling. We recruited a diverse group of learners ( N = 19) and assessed their knowledge and attitudes of colourism and use of SLP before and after the course. We also assessed student engagement and collected qualitative acceptability data. The course incorporated case method teaching, interactive case delivery, strategic storytelling methods, and team collaboration elements through digital platforms to facilitate course engagement and learning. Our findings indicate significant improvements in learners’ knowledge and concern regarding skin-shade discrimination and SLP usage pre- to post-course. Learners reported their intention to use strategic storytelling techniques for public health advocacy around colourism and use of SLPs. Qualitative learner feedback highlighted the positive aspects of the course, including its realism and the importance of collaborative learning with professionals from diverse fields to combat prevailing sociocultural issues. While this study offers valuable insights into the effectiveness of this innovative training approach, it also identifies areas of future improvements as suggested by learners, such as the need to increase content diversity, enhance communication channels, and extend time for discussion. This course provides a promising model for addressing colourism-related issues in Malaysia.