WASHING METHOD AND CLOTHES DETERGENT COMPOSITION

摘要

The clothes washing method using a phosphorus-free clothes detergent composition including a surfactant, an alkali metal silicate, and a metal ion capturing agent other than the alkali metal silicate, the weight ratio of the alkali metal silicate to the metal ion capturing agent other than the alkali metal silicate being not more than 5/1, the method having the step of washing clothes in a washing liquid having the following washing conditions: (1) the washing liquid having a pH of not less than 10.60; (2) the washing liquid containing a material having an ion capturing capacity in an amount sufficient for theoretically changing a water hardness of water for washing to be not more than 0.5 DEG DH; and (3) the washing liquid having a surfactant concentration of from 0.07 to 0.17 g/L.