Sennelier is proud to release a line of eco-friendly additives for oil paint. This nontoxic oil brush cleaner is biodegradable, 100% safe and easily disposable. It cannot be used with solvent-based mediums. Bio-solvent based, made from sustainable raw materials such as vegetable oils and grain.Details:100 mL bottle size9 bottlesNontoxicBiodegradableTravel safeSlightly longer drying time