got my nic juice and some flavours from oupa earlier this week and been vaping a test mix for today. hit my throat like a freight train it did which made me realise i have a delicate throat. so i thought i would share with the rest of the class why that is 
most ejuices has their base as either VG (vegetable glycerine) or PG (propylene glycol). some are even a mix of both. here is what my research found.
PG = throat hit and a thinner liquid that is easier for your coil to vaporise,
VG = thicker liquid that produces more "smoke" and is harder for your coil to zap
so back to the train story. my original test mix was using a nic juice thats vg based mixed with PG and some flavouring. but it was a rough ratio of 65PG/35VG. so just to test i added just a wee bit of VG to the vape mix that was in my kanger protank and miracle above suddenly it's not kicking the snot out of my throat and making loads more smokey. lots more smokey
so what should you take away from all of this? easy peasy lemon squeazy. making your own mix allows you to tailor the ratio so it suits your body best. that is why nic juice gets sold in either PG or VG, so you can customise your vaping experience.
but wait, there's more. bought an ejuice from a supplier and its either to harsh or not too harsh? well then go and add a tiny little bit of the opposite and watch your purchased juice turn into a whole new vaping joy!
what's that you say? near the end of the month and you've even run out of salticrax and looking at your last bottle of smokey juice you can see it won't last you? well then just add a wee bit more PG or VG. yes this will lessen the flavour somewhat depending on how much you add, and will lessen the nic content unless you add a nic based PG or VG, but if done right you might just be able to stretch that last bit of juice bottle till you can get more juices.
ok promise last bit of waffling : as with anything you read on da intawebz, it's always best to do as much research as you can before you go tinkering with something yourself and if anyone sees that i've made a huge booboo feel free to correct me or offer advice please. i am still very new at all of this
most ejuices has their base as either VG (vegetable glycerine) or PG (propylene glycol). some are even a mix of both. here is what my research found.
PG = throat hit and a thinner liquid that is easier for your coil to vaporise,
VG = thicker liquid that produces more "smoke" and is harder for your coil to zap
so back to the train story. my original test mix was using a nic juice thats vg based mixed with PG and some flavouring. but it was a rough ratio of 65PG/35VG. so just to test i added just a wee bit of VG to the vape mix that was in my kanger protank and miracle above suddenly it's not kicking the snot out of my throat and making loads more smokey. lots more smokey
so what should you take away from all of this? easy peasy lemon squeazy. making your own mix allows you to tailor the ratio so it suits your body best. that is why nic juice gets sold in either PG or VG, so you can customise your vaping experience.
but wait, there's more. bought an ejuice from a supplier and its either to harsh or not too harsh? well then go and add a tiny little bit of the opposite and watch your purchased juice turn into a whole new vaping joy!
what's that you say? near the end of the month and you've even run out of salticrax and looking at your last bottle of smokey juice you can see it won't last you? well then just add a wee bit more PG or VG. yes this will lessen the flavour somewhat depending on how much you add, and will lessen the nic content unless you add a nic based PG or VG, but if done right you might just be able to stretch that last bit of juice bottle till you can get more juices.
ok promise last bit of waffling : as with anything you read on da intawebz, it's always best to do as much research as you can before you go tinkering with something yourself and if anyone sees that i've made a huge booboo feel free to correct me or offer advice please. i am still very new at all of this