... :After using direct dye overdyed on denim garment, using MASFIX RD can result in very good fastness, deeper shade, convenient to use ... , non toxic and odourless.Easy to useVery good colour fixing result and can significantly improve washing fastness of fabric above 2 ... residual liquid and adjust temp before color fixing treatment.MASFIX RD: 1-2%owfBath ratio: 1:8-10;Temp.:40-50 ...