Typically, more than 80% substrate cleavage should be achieved
In Europe they have professional brands which have been operating for many years, and have worked with the French Interprofessional Vaping Federation FIVAPE to introduce the worlds first e-liquid production standards (the famous AFNOR standards)
Originally hailing from the Chicago area and now living here (Georgia) in the foothills of the Smoky Mountains, I've had the experience of picking cotton along a Tennessee back road, found some peyote once in Laredo, Texas (but only looked at it), have never held, smelled, or smoked tobacco in leaf form like this
This isnt about pretending smoking is suddenly good for you
Whether you are trying to quit smoking or simply prefer a nicotine-free option, the Breeze Pro Zero Nicotine disposable device has got your back