Alcohol is also used in pharmaceuticals, cosmetics, and topical products. Alcohol is frequently present in cough syrups and mouthwash, though these days one can find some alcohol-free products. In perfumes, the use of SD alcohol is common. SD alcohol is ethanol that has been denatured. Denaturing involves adding substances
to alcohol to make it undesirable for consumption. The denaturing substances are very difficult to remove from the mixture, so denatured alcohol cannot be used in food or drink, but the product remains prohibited for Muslims