Abstract
Our purpose is to contribute to the understanding of brand-portfolio management by examining the brand-portfolio strategies of a world-leading company. We started to work on a case study with L'Oréal. Our research focused on two questions: (1) what reasons lead L'Oréal to develop a brand-portfolio strategy?; (2) how can brand-portfolio management create a higher and stronger level of competitive advantage for this company? The results show that an aggregation of brands is not in itself a brand portfolio. The juxtaposition of brands is one of, but not the sole, element necessary for the development of a brand portfolio, which is a combination of a brand ensemble and key competences born out of organisational savoir-faire. By analysing the evolution of the L'Oréal brand portfolio, this work shows how the brand combination within a portfolio is a key factor for company development, growth, and risk management. It is a crucial phase to understand L'Oréal's competitive advantage.