Do you know what is in that bottle of essential oil you are buying? And I'm not talking about synthetic substances. Maybe in the future I will write something about that, but it seems as thought it's been done to death. Is your bottle of oil Lavender (Lavendula angustifolia, Lavendula stoechas) or Spike Lavender (Lavendula latifolia)? Why is that important to you?
EVERY essential oil you buy needs to have a common and Latin name on the bottle. Why you ask? So you know exactly what you are getting. It is very important.
Many plant families have the same common name. Latin or botanical names differentiate an oil in the same family from one another. Let's use orange as an example. Orange could be many different oils.