Yeah, while I'm waiting for my juice I don't really care for this horribly derived artificial flavours (nasty stories, involving beavers
)
So I was buying a bit from 'kind ejuice'
They say this...
Pure Nicotine Source
A lot of vaping nicotine today is produced from crops grown overseas under unknown conditions and extracted using high heat and strong chemical solvents like kerosene/hexane resulting in an inferior end product.
Cold Purified Extracted Nicotine
The nicotine we source comes from domestically grown and harvested USA tobacco crops. These crops are ethically grown and raised by the tobacco farmer without the use of pesticides, growth control agents and or herbicides resulting in a very pure and natural tobacco. The leaves are then harvested and prepared for the nicotine extraction process.
The botanical matter is then put through a process called Supercritical Fluid Extraction or (SFE). This extraction process is completely free of chemicals/solvents and uses a Cold/Closed refinement technology to shield from heat, light, and oxygen. The result is an ultra pure, diacetyl free, clear nicotine that produces a much smoother, clean flavor. These nicotine products have extended shelf life due to the absence of destabilizing impurities while providing a consistently rich full-flavor profile.
Edit: I suppose the question of 'really?' can be put forward though
I guess it's a case of trusting suppliers. If you dare!
Imagine that. 
They are VERY potent and VERY good!
