 Although the formulas are similar, a detergent pack's liquids may contain 10% water compared to 50% in liquid detergents.MonoSol is one of the companies that develops the water-soluble film used for laundry and dishwasher detergent packs, used by brands including Tide, with roughly $250 million in annual sales and controlling around 90-percent of the market.The film is designed to be soluble in cold water.