From the manufacturer:
Imaginisce-Milk Paint Bottles. In colonial days, paint was made from simple milk proteins and lime. No chemicals, no lead, just rich creamy colors. Just add water and enjoy. Just mix the powder in a 1:1 ratio with regular water. It stirs up easily, and goes on smoothly to almost any porous surface- wood, paper or chipboard (coated is best). Cleanup is fast and friendly (water should do it) but when your project dries, your milk paint will stay on. This package contains two 1.1oz paint bottles. Comes in a variety of assorted colors. Each sold separately. Non-toxic and 100% organic. Imported.