His first individual and group exhibitions where held in Lorenzo Marques and Johannesburg.
Back to Portugal in 1967, Carlos Dugos settled in Lisbon and committed himself to the improvement of oil painting techniques.
In 1974-75 he travelled around Europe; after a period in Zurich, in Madrid he enjoyed the contact with several artists and a good number of Art Galleries and Museums.
Again in Portugal, he spent long periods in Sintra and Ericeira, developing a deep study on symbolism and on the esoteric tradition, as reflected in his first works of “metaphysical” inspiration.
In 1977 he returned to Lisbon and carried on with his studies on symbolism as the spiritual language par excelence. To achieve his aim, he attended a course on theology organised by the “Leoninum Orthodoxum Institutum”, sponsored by Sorbonne, while, simultaneously he developed a long workshop practice, which works have never been exhibited as he considers them to be purely experimental. In one of his notes, in 1980, he wrote: “In Art, an idea - and the feeling that idea is related to - needs an appropriate plastic language in order to be able to express itself properly. The search for that language is constant in me. Exhibiting means having a coherent, articulate and mastered way of communicating. If you accept a public responsibility, you must possess the means to accomplish it.”
Such a responsibility was taken in 1984, when, invited by Arcano XXI Gallery, he took part in a group exhibition with eight canvases of his.
In that same year he became the director of a new art gallery - S. Bento – where he got in charge of a cultural development.
From 1985 he travelled around Europe again - Holland, Spain, Austria and Italy. In this same period he took part in several exhibitions in Lisbon and made a number of serigraphic works.
Carlos Dugos did some chromatic studies for public buildings in Portuguese towns and villages.
His work can be seen in Maputo City Hall, in Caixa Geral de Depósitos (the biggest Portuguese Bank), in the IGAPHE (Institute for the State Housing Property), in some other banks, public institutions, private companies and in numerous Portuguese and foreign private collections.