[header] How to tell the difference between essential oil and infused oil [title] Notice differences in cost. [step] Infused oils tend to be a lot cheaper than essential oils because they don't require the same extraction processes. ( they don't require a hard-to-extract oil to make up the bulk of the product. 
) if the oil you are buying seems very cheap, it is probably infused rather than essential oil. [substeps] Essential oils will typically cost $8-15 for 0.5 ounces (15 ml).