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PG or Propylene Glycol isprimarily used as a carrier fluid to disperse the nicotine and the flavouring evenly throughout the base mixture. The tasteless PG is also colourless.
Propylene Glycol will therefore never distort the flavour combinations of your DIY e-juice recipes. Too much PG may cause a burn sensation or "throat hit". 20 to 30% Percent per volume seem to be the norm.
