Iddings Deep Orange concentrated casein scene paint is formulated using only the highest quality artists' pigments available. The range consists of 24 brilliant, non-muddying colors, with an infinite range of intermediate hues possible through mixing. Iddings Deep Colors dries to a super flat, non-reflective finish which can be easily touched up. It is perfect for backdrops and other porous surfaces and can be easily diluted with water to reduce costs without losing color vibrancy.A casein binder is not water resistant, allowing Iddings Deep Colors to be washed off non-porous surfaces. This makes it ideally suited for film and television sets. When used on non-porous or hard to paint surfaces, Rosco Clear Acrylic can be added to improve adhesion and durability and to increase its water resistance. Iddings Deep Colors is intended for interior use only.