By relying on the dyeing properties of local plants such as cashew, barbatimão and saffron as well as those shared worldwide like maté, ginger and hibiscus, the Brazilian artisans at Natural Cotton Color add natural color to organically grown cotton. They do so while also using a number of traditional techniques practiced specifically by women: embroidery, crochet, macrame, frillery and other Renaissance-era lace techniques. Each region of Brazil is full of specialty embroidery knotting techniques, from the fisherman's knots of Margarida Alves to Gurinhem macrame.
Head of the twenty-year-old workshops, Francisca Vieira constantly searches to differentiate their work and imagines their textile production in the frame of apprenticeship. She compiles motif and technical archives, gathering samples from sales and markets. She has a preference for work that is difficult to copy: work that invents new knots or new concepts that she can uniquely offer to fashion designers.