Painting Dye makes up in seconds. No Lumps Brilliant bright strong colours. Non-Toxic and safe for children to use. FAS Painting Dye is a concentrated watercolour art dye that may be used as a watercolour paint, drawing ink, a colour wash or a non-permanent fabric dye. An economical solution for classroom watercolour painting projects. Just add water to make up intense bright colours as you need it. Ideal and safe for children to use in the classroom. Complies to international safety standards ASTM D4326 and European CE.