Bluette Concentrated Liquid Laundry Bluing – Fabric Whitener & Color Brightener for Whites and Delicates, 32 ozBluette makes laundry look whiter by adding a little blue, which makes white and light colors appear brighter. This happens because of a visual effect called irradiation. Use Bluette for brighter whites. It is safe and gentle enough for delicate fabrics. Add Bluette to the detergent at the start of the wash, not during the last rinse. Laundry Bluing for Whiter Whites. Try Bluette Laundry Bluing to make your whites whiter and colors brighter! How? A