Guerlain has been in existence for nearly 170 years and for a company so firmly anchored in history, the challenge has always been to reconcile the richness of tradition with a sense of innovation, to remember its origins and to move forward to meet the future. Perfumers for the last five generations, the Guerlain family successfully created unique scent harmonies, precursors for their time. Guerlain perfumes are also unique because their autograph is inimitable: this "stamp" is a unique olfactory harmony, called "Guerlinade". It is unique to Guerlain perfumers and jealously guarded by them. They include bergamot, the tonka bean and vanilla, among others.