Cigarettes contain a cocktail of over 4,000 chemicals, many of which are known to be highly toxic and hazardous to health. These include tar, arsenic, hydrogen cyanide, carbon monoxide, lead, ammonia, and formaldehyde. Other toxic chemicals include butane, cadmium, vinyl chloride, and acetone. In addition, cigarettes contain a range of additional chemical additives, such as flavoring agents, preservatives, and colorants, all of which have the potential to cause harm. While some of these chemicals are present in other products, including food and cosmetics, the sheer quantity and combination of chemicals in cigarettes, as well as the high temperature of the smoke, make them a particularly dangerous product.