Ecofoot developed hybrid reactive pigments, composed of a dye linked chemically to a polymer particle that will react with cellulosic fibres at temperatures as low as 25ºC. The process is specific for Garment dyeing, since there is little diffusion of dye into fibres, and colours can be easily washed down to give the worn effect characteristic of Denim. It can be also applied to knitted garments. only one washing-off rinse is necessary, since a cationic treatment is also applied. No salt is necessary either, due to the cationic charges.