To quickquickly clean between color changes, I put a kitchen sponge in an old mushroom container, fill it with hot water and use it to wash the brush by dranggingdragging it back and forth over the hot, damp sponge. I then swish and rinse the brush in a large jorjar of cold water. This is usually enough for a clean color change using one brush. Of course, you do need to keep the water with the sponge in it hot and the swish and rinse water clean.