Most essential oils are steam-distilled. The only oils that are are not produced by steam distillation are the citrus oils, which are cold pressed from the citrus peel. If it’s been done properly, there will not be any oil left in the peel for a second pressing. The same goes for the steam distillation process. The only essential oil that is produced by more than one distillation is Ylang Ylang. Ylang Ylang oil is a different quality at the end of the run than at the beginning. This is why there are the different grades, like extra, I, II, IIIand complete. Aside from Ylang Ylang, most all essential oil distillations are collected in one combined lot. Anyone who states that “my oils only come from the FIRST distillation” doesn’t understand essential oils.