Small + Medium loads 1 package. Large + extra-large loads 2 packages. Whitens whites. Brightens colors. Bleach free. Rit Whitener whitener & brightener is Safe on: All washable colorfast fabrics. Whitens whites and brightens colors without the harshness of bleach. Works with all washing machines, including high-efficiency. Note: Multiple packages needed if using in a washing machine. Conforms to ASTM D-4236. ritdye.com. For more information and step-by-step tutorials, visit ritdye.com. Made in U.S.A. of U.S. and imported parts.