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[9,10] Factors that reduce the pH value of saliva are an increased number of acidogenic bacteria, the presence of dental plaque, reduced saliva secretion, reduced buffering capacity, as well as the presence of certain substances, such as nicotine from cigarettes, which potentiate the factors mentioned above

This simple 2-ingredient powder has great odor-busting powers

They've downplayed it

doi: 10.1016/j.vascn.2010.01.009

"We've had a couple, a handful (of scenarios), where tobacco was sold to someone under 21

No one I am sure
