Lavender: "Lavender is one of the most versatile oils,” Scarpelli said. "It is more commonly known for its relaxing effects but works on bruises, cuts, and skin irritation too.” Dr. Oz says that the scent of lavender can reduce the levels of stress hormones in your blood. That’s a good reason to put a few drops in your bath in order to help you relax at night. Scarpelli recommends putting a couple of drops of the oil on your hands, rubbing them together and inhaling, then sprinkle a few more on your pillow before you hop in bed.