At it's most simplistic, essential oils are the complete essence of the plants from which they are derived. Everything that the plant is, is condensed down into oil form. Most oils are steam distilled to extract this fluid, but other plants require different methods.
Plants are the oldest forms of medicine, next to touch, and each plant has its own unique properties. For every oil you can find, there are many different uses, including medicinal uses.
I am by no means saying that a doctor is not necessary in our lives. But most of the active ingredients in our over the counter and prescription medicines is derived from these naturally occurring compounds found in plants.
In today's fast paced world, we tend to go for the quick fix, that over the counter remedy. Essential oils are a way to take a holistic, natural preventative step to your health care.