Social and environmental factors are important too, as is policy
Jack Benny would seamlessly weave the advertisement into his comedy hour.
There's at least some evidence the tactic is working
Its a pure, dust-free, completely harmless material that is so safe, so effective, it actually is used to help filter the air in operating rooms of leading hospitals. The marketing blitz included ads in medical journals and Kent gift boxes for physicians, accompanied by Dear Doctor letters talking up the advantages for patients whom you have felt obliged to advise to cut down or cut out smoking. The filter material was produced at H&V plants in Massachusetts and shipped to Lorillard plants in Kentucky and New Jersey

Reynolds Tobacco Company for Camel cigarettes Circa 1935 Chesterfield A Glorious Combination Magazine advertisement by Liggett & Myers Tobacco Company for Chesterfield cigarettes July 1939 After a Mans HeartWhen smokers find out the good things Chesterfields give them Magazine advertisement by Liggett & Myers Tobacco Company for Chesterfield cigarettes 1937 and my new cigarette is Chesterfield Magazine advertisement by Liggett & Myers Tobacco Company for Chesterfield cigarettes 1938 By the way Advertisement by Liggett & Myers Tobacco Company for Chesterfield cigarettes The Saturday Evening Post 1933 As we go along Magazine advertisement by Liggett & Myers Tobacco Company for Chesterfield cigarettes 1934 Id rather have a Chesterfield' Magazine advertisement by Liggett & Myers Tobacco Company Colliers Magazine 1931 Craven A Such dependable quality at home or abroadCraven A never vary Advertisement by Carreras Tobacco Company for Craven A cigarettes The Illustrated London News October 21, 1936 Craven A Will not affect your throat. Advertisement by Carreras Tobacco Company The Illustrated London News July 15, 1939 You can always trust Craven A quality

This rollbox makes cigarettes of 8mm (regular) and slim (6mm) diameter