Perfumes are surely the most delicate and evanescent of all human creations. Yet they make a lasting impression on the memory. What do we do when perfumes are no longer found for sale? How do we find them again? The Osmothèque (from the Greek « osmè » = odor and « theke » = storage) is a nonprofit organization which opened on 26 April 1990. The first perfume archive in all history, it preserves these very delicate, precious creations from the wear-and-tear of time and keeps them from becoming lost and forgotten. This living collection of existing or no-longer available perfumes protects the world’s fragrance heritage. The Osmothèque collection today represents more than 4,000 perfumes, including 850 that are no longer available.