global center for good governance in tobacco control Industry Profits vs. Public Costs | Tobacco posted on the topic Is it really “just content”
Description
Whitening teeth: with our toothpaste, you can easily achieve a whitening of the teeth
The tobacco that were talking about is for cigars and specifically the shade grown tobacco is the wrappers, Dale Cahill says

[8] The tobacco used to fill the cigars is unique among Cuban brands owing to a special third fermentation in wooden barrels at the El Laguito factory, aimed at producing a smoother flavor than other cigars

Antique Justrite cigar can from approximately the 1930's
Some color changes were observed as the pH was adjusted, being pale pink in acidic conditions and yellow under basic conditions

Just content to carry on losing in an endless, unwinnable war to eliminate the tobacco industry by eliminating nicotine, slowing down the migration away from smoking, harming more nicotine users, and nurturing criminal gangs