LAVENDER If you purchase one essential oil. My recommendation would be Lavender. Lavender has so many benefits and uses. I use it to relax. I rub a drop on my hands before crawling into bed each night. It helps aid in relaxation and sleep. I also created a blend of Lavender and coconut oil for my dog Gracie. She has allergies and the lavender-coconut oil blend soothes her skin.