
The third generation at the helm of the family business, Claire Trescartes joined Segede in 2025 to lead an ambitious ecological transition. Trained at HEC and Polytechnique, with experience in impact entrepreneurship, she spent a year documenting the carbon impact and recyclability of zamak (a key material in beauty packaging) and bringing together manufacturers, recyclers and European authorities.
CosmeticOBS: How does Segede’s work this year change the game for beauty packaging? And what gives you credibility on this subject?
Claire Trescartes: Segede is a company that has specialized in metal processing and luxury packaging for 70 years, with factories in France and China. We are therefore primarily producers, in the industrial sense of the term.
Today, there are only a handful of us who actually process this material and manufacture zamak packaging in France. The other players tend to act as design offices and subcontract production abroad. However, in order to collect reliable data on carbon impact and recycling, you need to control the value chain and have access to the field. Manufacturers are more likely to open their doors to other manufacturers than to purely commercial organizations.
Our work has made it possible, for the first time, to map the zamak industry in a structured way, where there was previously no dedicated federation or clear representation. We have been able to bring together the major European collectors, recyclers, and refiners around this issue, positioning ourselves as a central player in the chain.
I feel I have a dual legitimacy: on the one hand, that of …












