Carbona® Super White combines the convenience of a laundry sheet with the bleach free whitening power of OptiBright Technology to safely maintain white laundry. Over time, while laundry can turn yellow or gray from wash water residue or use of chlorine bleach. Super White with OptiBright Technology, with its advanced optical brightener, keeps laundry white...wash after wash. Additional Benefits• For use with all white or patterned white laundry• For use in any washer• For use in hot or cool water temperatures. Easy and convenient...No splashing, no dosing & no bad odor! 20 In-Wash Sheets Whitens & Brightens he Safe for All Washers