Propylene glycol and vegetable glycerin are common ingredients in smoke machine vapor, cosmetics, hair products, food, drinks, cigarettes, medicine and many more products. Vegetable glycerin allergy may be very unusual. Most reactions are possible caused by an allergy towards the plant oil the vegetable glycerin was derived from. Propylene http://hemptimesnc4.tblogz.com/everything-about-topical-cbd-and-blood-thinners-11221423