100 percent nicotine is a deadly poison. It will absorb through the skin and kill quickly. But, so will any dangerous chemical in concentrated form.
Vapers actually absorb less nicotine through
vaping than they would smoking cigarettes. The rest of the E-liquid is relatively harmless ingredients. There's propylene glycol that is used in foods, medical preparations, and even soft drinks and sno-cone liquid that you buy to pour over ice chips. It's in your salad dressing, toothpaste, and many other products you buy.
PG is used in breathing treatments in which patients breathe in the fog to deliver medicines to the lungs.
VG liquids used Vegetable Glycerin as a base.
VG is similar to
PG and is used in foods as a thickener and sweetener. It's also used in liquid soaps. Both
PG and
VG are GRAS (generally recognized as safe) by the
FDA.
The other ingredients in E-liquids are flavorings that are used in foods and candy making. Water soluble flavors are considered safe to vape. Oil based flavorings are not. Oil is an enemy to lung tissues. The lungs can't expel oil. That's why oil based nose drops were outlawed decades ago.
When you consider that tobacco cigarettes contain 4000-7000 chemicals, many of which are detrimental or are carcinogens, the general line of thinking is that vaping is a much safer alternative to smoking. We all would like to see extensive testing to prove that. So far, the
FDA has tested some E-liquids and only found a couple out of many that contained trace amounts of diethylene glycol in the mix. DG is not desirable and shouldn't be there. It was probably a contamination in the
VG or
PG that wasn't pure from a couple of sources. We would like that not to appear in our E-liquids. Trace amounts of carcinogens were also found in some E-liquids in amounts equal to that found in nicotine gums approved by the
FDA for quit smoking products. Since the nicotine is extracted by the same process for both Ecigs and Nicotine Gum, that's normal. The carcinogens were thousands of times less than found in a tobacco cigarette and were trace by-products of the process.
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