If you enjoy using a Sauna, you might want to add some Essential Oils to the experience. Aromatherapist Valerie Ann Worwood, author of The Fragrant Mind, states the only essential oils you should use in a sauna are eucalyptus, tea tree, and pine. These oils are considered excellent cleansers and detoxifiers, and they enter your body through inhalation and leave by perspiration. However, Esoteric Oils states that you can also use peppermint, lemon, lavender, niaouli, clary sage, cypress, birch, rosemary, lime, grapefruit, and bergamot essential oils in a sauna. Most importantly, you want to make sure you use only non-irritating oils and don't overdo them. Do NOT place undiluted essential oil on the heated rocks of the sauna. Rather, mix two drops of essential oil in about two cups of water and then douse the rocks. If you have an infrared sauna that has no rocks, Sauna Talk recommends adding several drops of essential oils to a spray bottle filled with water and spraying the surfaces of the sauna.