diy vape juice

If you make your own flavoured vape juice and wanted to sell to the public. Do you need some kind of gov approval or licence?

Hi, It has been over 8 months that I have stopped smoking completely and switched to vaping, Problem is that vape juices are very expensive here in my country and I was hoping if someone can hook me up with Ejuice DIY concentrates so I can make my own juices which i believe would be cheaper...

I'll start with a few of my DIY favorites