I add about 5-10% vodka to all of my mixes. I knew that some people had used different forms of alcohol when mixing, so I chose vodka because we have it. I usually take a PG mix with nicotine, then add that same amount of glycerine, then some flavoring, then 10-20 drops of vodka (when making about 8-10 mL of juice). It improves the hit, brings out the flavor, and things the juice just enough (since we use half glycerine, sometimes the flavoring doesn't dilute it enough). Also, we are kinda going off of the idea that alcohol is a solven to PG in the original state (I don't know which thread I read that on), so I figured it couldn't hurt to add some, maybe it will help to improve atomizer life. No decisions as to whether that helps or not. I can say this much, my husband grabs a new atomizer usually around monday when he is fed up with the prior weeks vape...he didn't grab one last week, and not yet this week...it's the only atomizer that has lasted him more than a week...but don't read too much into that...could just be a good atomizer!