The Waush® Hypoallergenic Laundry Detergent formula even works in cold water, which saves energy and lowers heating bills. Waush® Hypoallergenic Laundry Detergent contains no dyes or perfumes for those with sensitive skin. The convenient pump (sold separately) accurately dispenses 1/2 to 1 oz. 1 64oz bottle will deliver up to 256 loads of laundry with this purchase you will be buying 4-64oz bottles.