You can also add water when applying the paint in order to modify its consistency. Since milk paint isn't re soluble once it has dried you must work fast. However, a good trick is to add a small quantity of glycerine or acrylic retarder to extend its working time which allows the creation of more complex effects along with blending.

Casein paint isn't only used in wood finishing; it can also be used in techniques such as fine arts or faux finishes.