Non-bleaching procedure for the removal of tea and coffee stains

摘要

A method for washing dishes, comprising: applying an acidic pre-soak composition to dishes for 1 min or less, and thereafter, applying an alkaline liquid detergent composition to dishes, and rinsing with water; wherein said alkaline detergent composition has a pH above 10 and the acidic pre-soak composition has a pH of 2 or less; the compositions being applied to the dishes without dilution or after being diluted with water, in such a way that, once applied to the dishes, the compositions impart an acidic or alkaline pH, respectively, to the surfaces of the dishes, where said acid it comprises citric acid or glycolic acid.