In order to increase the fastness of coloring, watercolors used for paintings are added to the pigment with an appropriate amount of water-soluble gum. How to clean clothes with watercolor stains when they are stained with watercolor stains?

First use hot water to dissolve the colloid in the stain, then decolorize it with detergent or light ammonia water, and finally rinse it with clean water. White clothing can be decolorized with hydrogen peroxide.