Rubbing alcohol is a liquid used primarily as a topical antiseptic. It is either isopropyl alcohol or ethyl alcohol that has been mixed with water. In the UK, rubbing alcohol is typically known as surgical spirit, according to the British Pharmacopoeia. Rubbing alcohol is denatured and undrinkable even if it is ethanol-based, due to the bitterants added. Rubbing alcohol is used for external use only and is not intended for consumption. Rubbing alcohol is a good natural killer of bacteria, due to its strong alcohol or ethanol content. Rubbing alcohol has a wide variety of uses, both in household cleaning and for cosmetic purposes. It is used to disinfect household surfaces or items including sponges, dishcloths, and gardening tools. It can also be used to clean electronic devices, glasses, and as a substitute for nail varnish remover. Rubbing alcohol is a mixture of isopropyl alcohol and water, and sometimes contains additional ingredients. Most rubbing alcohol brands contain 70% isopropyl alcohol.