Keep brushes like new with this lemon-scented cleaner and Preserver. Even old, hardened, oil paint brushes may be restored to their original snap and luster. Non-toxic water-soluble cleaning compound works safely on oils, acrylics, or watercolors. Rinse brush under warm water, swirl it in the cleaner until a Lather forms, then rinse. Repeat if necessary until brush is clean. No harmful fumes or odors. New with this lemon-scented cleaner and Preserver Non-toxic water-soluble cleaning compound works safely on oils, acrylics, or watercolors Rinse brush under warm water, swirl it in the cleaner until a Lather forms, then rinse No harmful fumes or odors.