Premium highly refined solvent formula, effectively thins and blends well into oil-based paint, stain and varnish Especially effective in removing oils, greases, carbon, and other material from metal. Great for cleaning and thinning. Mineral Spirits is a premium, highly refined solvent formula which effectively thins and blends well into oil-based paint, stain and varnish. It is very low odor and dries with minimal residue, so it is an excellent cleaner for paint brushes, tools and equipment immediately after use. Our solvents and thinners are mixed into wet paint, varnish, stain and other finishes to weaken consistency and thin them out. They're also great for clean up; like elbow grease in a can. They're formulated for professional use to strip years of old paint, clean up heavy-duty spills, and give homes a second chance.