Steeping Vape Juice Steep Vapors Pop Deez Caramel Popcorn If vape juice turns dark ,can I still use it ? Knowledge Kaiweili Digital Technology When Was the First Vape Made? A Brief History of Vaping ZOFO Why Does Vape Juice Turn Brown? Since their introduction in Europe in 2006 and the U.S. in 2007, the use of e cigarettes a.k.a., vapes has skyrocketed. A recent review from researchers in Australia found the results