I heard several people here talk about vaping unflavored nicotine. It did not sound interesting but gave it a try last week. I mix it at 60pg 40vg with 12.5% nicotine. I've been vaping it on a 2.0ohm cartomizer. The cart is still going strong with no signs of weakening. The mix takes no steep time, only a good shake. The vape has a natural sweetness with flavor and good TH. It's something every DIYer should try. I easily use this mix 50% of the time now. If you've tried this and like it then let us know. If you plan to try it then let us know that too. Another positive is when you switch to your flavored liquid, it really shines.