31. In the future, use denatured alcohol instead of rubbing alcohol; it may have less of a bleaching effect. 32. If that does not work you can rub the surface with fine steel wood moistened with denatured alcohol . 33. Because of the diversity of industrial uses for denatured alcohol , hundreds of additives and denaturing methods have been used. 34. Cleaning is usually achieved by the use of compressed air nozzles and solvents ( such as denatured alcohol ). 35. A denatured alcohol is poisonous, which means that it falls outside of laws governing alcohol that you can drink. 36. "When they're cooking, they're heating this denatured alcohol , and chemicals and fumes work their way down toward the burner. 37. As an example, the formulation for " completely denatured alcohol ", according to 2005 British regulations was as follows: 38. Denatured alcohol diluted with water was used to eliminate stains, but it left rings where it was poured on.39. If so, the shellac can be softened by rubbing with denatured alcohol , after which the white mark should come off. 40. As a result, there is no duty on denatured alcohol in most countries, making it considerably cheaper than pure ethanol.