In 1914 Drewsen opened a shop in Copenhagen where she sold Swedish furniture and textiles. When she began to produce her own textiles, she ensured that the fabrics were not only of high quality but that they exhibited aesthetically attractive design features. In 1925, she became the artistic consultant for the entrepreneur Kaj Dessau who in 1928 designed the household furnishings store BO in the centre of Copenhagen, later known as Illums Bolighus. The goods displayed were placed in brightly lit, artistically designed interiors where the furniture and textiles were accompanied by artwork, including sculptures by Kai Nielsen. It was the first time a retail store enjoyed such innovative displays.
