As I understand it a large proportion of vg is palm based however you are unlikely to find any manufacturer owning up to this due to the way palm products are manufactured, rainforest deforestation, orphaned orangutans etc. Most manufacturers try to distance themselves from this for obvious reasons. On the other hand it's quite easy to find palm-free vg, if you're enquiring from a safe to vape point of view then any pharma grade vg should be safe.