The company presented romantic dramas by Victor Hugo and Alexandre Dumas, comedies by Eugène Scribe, melodramas and vaudevilles.

Doux improved the quality of the theatre in Lisbon, introducing new genres and styles of acting, notably promoting interest in Romanticism.

His staging of Um auto de Gil Vicente, by Almeida Garrett in 1838 is considered to have inaugurated Portuguese romantic theatre.

He trained and directed a large number of actors who would become popular, including Teodorico Baptista da Cruz, Epifânio Aniceto Gonçalves, Joaquim José Tasso, Emília das Neves, Delphina do Espírito Santo, Carlota Talassi, Ana Cardoso, and Emília Cândida.

Clashes with businessmen, local artists and the press were regular events, making him move to Brazil in 1851.