There are a number of ways to use aromatherapy. If you have a serious condition, you may want to contact an experienced aromatherapist who can help guide you. Certain essential oils can cause photosensitization (making your skin more sensitive to the sun) or allergic reaction and others should not be used on pregnant women, so it's important to be familiar with an essential oil before using it. That said, you can try to use essential oils at home via the following methods