Pretreatments were made to a Pima cotton jersey knit with yarn number Ne 30/1, with two processes: scouring and bleaching to obtain a hydrophilic material with a whiteness degree that allows dyeing of light colors and whites. The trials were developed at a laboratory level at the National University of Engineering (Textile Laboratory No. 24) using beakers and manual agitation, dyeing was executed on the Conmatex machine with vertical movement and to evaluate the degree of whiteness, the spectrophotometer (Datacolor 550, software Color Tools versión: 1.1.1) was used. Three bleaching processes were carried out: classical (referential) consisting of separate scouring and bleaching stages, integrated that considers scouring and bleaching in a single bath and enzymatic where the enzyme activates the formation of peroxide and has a previous scouring phase. When evaluating absorption and capil...