Historical Inquiry: When Did Vapes First Enter the Market? Vape juice turning brown? Vaping Forum Planet of the Vapes Steeping Vape Juice Steep Vapors Pop Deez Caramel Popcorn If vape juice turns dark ,can I still use it ? Knowledge Kaiweili Digital Technology 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 When Were Vapes Invented? History of E Cigarettes OK Vape