Tide Bright's + whites rescue color safe in-wash laundry booster Pac's get clothes up to three shades whiter in one wash! they're formulated to fight dinginess and dullness, and help restore and brighten whites. Tide Bright's and whites rescue Pac's prevent yellowing by breaking down body soils and residues, so you can be sure your whites stay white, and your colors are kept safe. For best results, add tide Bright's and whites rescue Pac's to your wash along with your favorite tide pods laundry detergent pacs. They can be used with regular and he washing machines, both front- and top-loaders. When washing with base tide liquid detergent.