I don’t really have an understanding of VG/PG percentage. Any tips?
PG and VG are the two substances that make up the majority of your eliquid. Even the nicotine and flavourings we add come in a VG or PG base. You can adjust the proportions of VG and PG to tweak the characteristics of your eliquid. Additionally, some people are sensitive to one or the other, so they use a higher proportion of whichever one doesn't bother them.
Characteristics of VG and PG:
VG:
- Thicker and more viscous - coils that work with high VG have bigger holes
- Makes more clouds
- A bit smoother -smooths out the throat hit from nicotine in particular
- Can mute flavours
PG
- Better flavour carrier - less muting
- Thinner, flows better - older-style coils with smaller holes tend to work better with higher PG
- High PG can be harsh depending on your setup
- Less clouds
Basically, you tweak the proportions of each until you like what you get. People who like (nearly) 100% VG often add something else (a tiny bit of distilled water or ethanol) to make it flow and wick better, because 100% VG is super viscous.