What goes into tobacco products?

The majority of smokers use cigarettes. A manufactured cigarette is a carefully designed device for delivering nicotine. Cured and processed tobacco is packed and wrapped to create a standardised product. The characteristics of each brand depend on the tobacco type and blend, how it is cured, the additives used and other technical characteristics of the cigarette. These may affect for example the content of different substances in the smoke, burning characteristics nicotine release and the size of smoke particles.
In recent decades, more and more additives have been introduced, and current cigarettes may contain up to 10 per cent additives by weight. Nearly 600 different additives have been documented. They also affect smoke characteristics, such as colour, harshness, odour and flavour.
The main tobacco additives are sugars, which are also present naturally, and moisturising agents. Others include preservatives and numerous flavourings, including cocoa, liquorice, menthol and lactic acid.
Roll-your-own cigarettes, cigars, waterpipes and smokeless tobacco products, which may also contain additives, all account for small portions of the total market.