Propylene glycol and vegetable glycerin are typical ingredients in smoke machine vapor, cosmetics, hair products, food, drinks, cigarettes, medicine and many more products. Vegetable glycerin allergy is incredibly scarce. Most reactions are very likely caused by an allergy to the plant oil the vegetable glycerin was derived from. Propylene http://cbdnol9.dgbloggers.com/904089/everything-about-topical-cbd-dosing