Citurs Thinner is a combination of highly purified mineral oils in cosmetics quality and of precious essential oils in food quality. Isoparaffinic mineral oils are commonly used in pharmaceuticals, sun tan lotions, hair sprays and in animal feed. According to a study conducted by the American National Paint, Varnish and Lacquer Association they are by far less involved in the formation of smog and the depletion of the ozone layer than any other solvent due to their chemical inertness. Natural orange peel oil is the actual solvent component. It is used in small amounts only to avoid the risk of a sensitizing effect.