I was asked this morning by a fellow vaper about expired juices. She has a bag of expired Liqua flavours some expired in 2018 and asked if those were safe to vape. Besides the flavour being bleh, wasn't sure how to answer her. Anyone tried a vape juice that was expired?
PG/VG shelf life is quite long. The flavour being suspended in PG should be OK but maybe a bit muted. But it's the Nic that degrades or that's what I hear. If it was kept in a cool dark place I would vape it.