USDA Organic Essential Oil/soap Gift Box. It is very common to use essential oils by smell it directly from the bottle or using a diffuser or humidifier. It can also be diluted with a carrier oil and applied directly to the skin. If you want to create your own bath fragrance, you can add the scent to a body wash lotion or shampoo as well as mix it with a base liquid soap and make your own personal bath lotion. I advise testing the fragrances before using them to verify that you are not allergic, my products are natural and organic, which does not mean that they cannot cause allergies.