Déjazet was born in Paris in 1798, and made her first appearance on the stage at the age of five. It was not until 1820, when she began her seven years' connexion with the recently founded Gymnase, that she won her triumphs in soubrette and "Breeches roles", which came to be known as "Dejazets." From 1828 she played at the Théatre des Nouveautés for three years, then at the Théâtre des Variétés, and finally she became manager, with her son, of the Folies-Déjazet, later renamed the Théâtre Déjazet. Here, at the age of sixty-five she still had success in youthful parts, especially in a number of Sardou's earlier plays, previously unacted. She retired in 1868, but then took a touring company to London's Opera Comique in October 1870.