Essential oils have been used for centuries for their healing properties, but is there a down side? Dr A. Bolin takes a look at the good, the bad and the sometimes ugly side of essential oils. From relieving migraines to acne, it seems essential oils can help in almost any situation. And what’s more, they’re ‘natural’, so they must be safe – right? Well, that isn’t always the case. If ingested they can be toxic – even fatal, they can cause allergic reactions, and they can burn skin. Let’s take a closer look. What are essential oils?  Essential oils are…