Famous People Smoking

Various additives are combined into the shredded tobacco product mixtures, with humectants such as propylene glycol or glycerol, as well as flavouring products and enhancers such as cocoa solids, licorice, tobacco extracts, and various sugars, which are known collectively as "casings". The leaf tobacco will then be shredded, along with a specified amount of small laminate, expanded tobacco, BL, RL, ES and IS. A perfume-like flavour/fragrance, called the "topping" or "toppings", which is most often formulated by flavor companies, will then be blended into the tobacco mixture to improve the consistency in flavour and taste of the cigarettes associated with a certain brand name. Additionally, they replace lost flavours due to the repeated wetting and drying used in processing the tobacco. Finally the tobacco mixture will be filled into cigarettes tubes and packaged.
A list of 599 cigarette additives, created by five major American cigarette companies, were approved by the Department of Health and Human Services in April 1994. None of these additives are listed as ingredients on the cigarette pack(s). Chemicals are added for organoleptic purposes and many boost the addictive properties of cigarettes, especially when burned.
One of the chemicals on the list, ammonia, helps convert bound nicotine molecules in tobacco smoke into free nicotine molecules. This process is known as freebasing which enhances the effect of the nicotine on the smoker.