The Fanola No Yellow Shampoo 33.8 oz & No Yellow Mask 33.8 oz Combo Pack is your best weapon in the fight for color treated hair care. Beat back those unwanted yellow tones to enhance the look of your grey, ash or lightened hair. Use shampoo on dry hair with gloves to prevent staining of your hands. Let product sit for 1 to 3 minutes and rinse carefully. Follow up with the mask and apply from scalp to the ends. Let sit for 5 minutes before rinsing. Apply weekly or whenever yellow color appears.