Essential Oil Remedies

I was surprised by the effectiveness of an essential oil patch I placed
on my upper chest, near my armpit. (I awoke calm & relaxed, unusual, forgetting that I had it on)I purchased it at a local health store.

Question: Since the product is too expensive, I was wondering if anyone has any home recipes or methods for applying essential oils to skin. The oils in this patch were Bergamot, Ginger, Lavender and a carrier. A patch seems more effective then just rubbing it on.

EC, perhaps an essential oil section? thanks!