A combination of soap and builder designed for general purpose use, especially laundering. It also usually contains fluorescent whitening agent, colorant, and fragrance. The granule form of built soap represented a major development and, by the late 1930s, had largely replaced laundry soap in bar and chip form. However, it still presented the classical soap problems in hard water, and thus built soap granules rapidly lost market share when built detergents were marketed in the late 1940s. Today, built soaps are in very limited distribution.