The Institut Pasteur is pleased to announce a landmark research partnership with L'Oréal, the world's leading beauty company, marking the first scientific agreement of its kind between these two world-renowned French institutions.
This strategic alliance brings together complementary expertise in immunology, microbiology, and beauty science to investigate the skin as a complex living ecosystem. Framed within a three-year master research agreement, the collaboration will explore skin biomarkers, the cutaneous microbiome, and skin's role as a silent witness of holistic health and well-being. The partnership aims to accelerate the discovery of new biological targets and the development of next-generation active ingredients for advanced skin health solutions.
By synergizing L'Oréal's technological excellence with Institut Pasteur's fundamental research expertise, the teams will investigate how microbial-immune interactions influence accelerated aging processes, reveal systemic health conditions, and maintain skin barrier integrity.
First Concrete Research Initiative: Decoding Hormonal Influence on Skin Immunity
The partnership has already catalyzed its first concrete research project, addressing a fundamental question: why don't all skins react the same way to external aggressions? Long considered a passive barrier, skin is in fact a dynamic organ whose immune responses and physiology are profoundly shaped by sex hormones—particularly during key physiological stages such as the menstrual cycle and pregnancy.
Led by Clarisse Ganier and Laure Guénin-Macé within the Meta-Organism unit, this innovative study aims to decipher how hormonal fluctuations modulate cutaneous immunity and interact with the skin ecosystem, including the microbiome. By combining the Institut Pasteur's expertise in immunology with L'Oréal's advanced non-invasive skin analysis technologies and cutting-edge 3D models (including organoids and reconstructed skin), the research seeks to understand the mechanisms underlying sex-specific differences in skin health.
This project addresses a critical gap in research, where hormonal influences on skin defense have long remained underexplored despite their profound impact on inflammatory skin diseases. The findings promise to open new therapeutic avenues and advance personalized approaches to dermatological health, particularly for women.
Professor Yasmine Belkaid, Director General of Institut Pasteur, emphasized: “Such collaborations are essential to accelerate scientific progress and translate discoveries into responsible, evidence-based innovations.”
Formalized during a scientific symposium held at L'Oréal's Advanced Research center in December 2024, this collaboration exemplifies the Institut Pasteur's commitment to its Pasteur 2030 strategy: fostering translational research through strategic alliances that unite academic excellence with industrial innovation to advance personalized health solutions.
