Eco-Solve is the most eco-friendly, plant-based professional paint thinner on the market. This is a safe and effective alternative to toxic conventional paint thinners. Thins paint, cleans brushes and restores old, dried brushes. Eco-Solve pairs perfectly with our Pigments, allowing oil paint artists to have a completely safe painting experience. It is compatible with all mainstream oil paints as well. Comes in three sizes - 8 oz, 16 oz and 64 oz. -- Why does it have a distinct smell? While eco-solve is totally non-toxic and the vapor it emits is not harmful, it does have a strong smell that may cause headaches for ultra-sensitive folks, so the precaution to use in a ventilated area is sound. Why is OMS (Odorless Mineral Spirits) toxicOdorless mineral spirits (OMS) are just as toxic as regular mineral spirits because it contains benzene, which is an odorless carcinogen in petroleum products and can do huge amounts of damage including cancer and death. This evaporates into the air, and you absorb the benzene through your nose, skin and eyes, which most people don’t realize. It then goes directly into your bloodstream. Eco-solve does not contain benzene or any other toxins. Is it technically a solvent? What is in it?It's technically not a solvent but soy oil that has had the fatty acids removed and then processed with soy esters. It's 100% soy but looks and behaves exactly like a solvent. Its composition is similar to that of essential oils - it's a very strong, completely non-toxic, concentrated natural liquid. Eco-solve doesn't leave any residues - it's very archival, non-yellowing, does not cause cracking, and adheres great. How do I store it? Glass vs. plastic Storing it in glass is definitely recommended more than plastic. It's a very strong substance so it may dissolve or warp a very thin plastic cup or bottle. It's similar to essential oils which are very strong and can dissolve some types of plastic. How to dispose of rags? Is it flammable? It is technically an oil - not a solvent, however all oils are combustible if left on a rag or something similar in a hot environment. Olive oil, linseed oil, walnut oil, etc. - all oils are the same in that way. Take care to dispose of it in a safe way. Some people have a metal bucket with a lid that they keep soiled rags submerged under water.