No, smokeless tobacco does not contain fiberglass or any other additives meant to "tear or rip" the mucosa (lining of the mouth) to allow for nicotine to be absorbed into the bloodstream. Mucous membranes, like that which lines the mouth, are thin and meant to allow for substances to pass through them and into the bloodstream. Many medications, such as nitroglycerine for people with angina, are designed to be absorbed through the mucous membranes of the mouth to get into the blood stream. The nicotine in smokeless tobacco can cross into the bloodstream to get to the brain without any help or cuts or tears in the mucosa.
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No, it is absorbed well enough sublingually, due to the high concentration of blood vessels inside the lips, and under the tongue.
http://www.tobaccoharmreduction.org/faq/healtheffectsofst.htm
There has been rumors of chewing tobacco companies putting fiberglass in their chew, therefore cutting one's lip to improve nicotine consumption. I've tried looking it up online but cannot find a legitimate answer. In my own opinion, I would say no, but that's just an opinion.
Yes there is. They put it in the filter and when you inhale a small portion cuts up the inside of your mouth, but not enough so you can feel it, and the drugs from the cigerette will go through your blood stream. This is how they get you addicted faster.
yes there iz a small precent of fiberglass in dip or snuff to poke or cute tiny holes in the lip or cheek to azoarb nicotine if you hold a can of chew in a light you can se it shineing.