Rit® Dye Laundry Treatment Whitener & Brightener. Brightener for dingy white and colored fabrics. Net wt 1 oz (28.4g). Conforms to ASTM D-4236. Safely whitens whites and brightens colors without bleach. Ideal for whites with colored trim or prints. Safe for all washable colorfast fabrics including cotton, polyester blends, nylon, rayon, wool, linen and silk. Quality brands. Priced for living. Questions 1-866-794-0800. Visit our web site at www.ritdye.com. ©2015 Phoenix Brands™.