Non-toxic and earth-friendly, many of the pigments used in our formulations are created by the Society of Ochres, a 120-year-old French company dedicated to reviving and promoting the use of colored earth pigments. Picture yourself on a journey through time and space, gently, slowly exploring the depths of the ocean or the heights of Earth's atmosphere. Find a refreshing, unique point of view there where rigid boundaries dissolve. Easy to use, add enough water to create the paint consistency you desire, from thin watercolor washes to opaque tempera paint. Cleans up easily with warm water and mild soap. Mix enough paint for one sitting, and store excess in the fridge for up to a week.