Why Does Vape Juice Turn Brown and How to Avoid It Vape Green I've noticed something with these posts involving dark or defective pods.. the flavor is typically Gold or Tobacco flavoring. I buy the 2.4% Menthol n only had a handful of issues. The Does Vape Juice Expire? On right, pod I've been using for a few days, on left, new pod. Is Vape juice turning brown black normal? Should I be concerned?? : r Vaping Why Does Vape Juice Turn Brown?