This is the use of massage oil or cream containing essential oils, which is a highly concentrated plant oil. The essential oils are expressed in various different method and diluted into the massage oil or cream. Small particles from the essential oils are then absorbed into the body through the skin, or inhaled through smelling and can affect a change from within. It is believed that they can promote improvement and balance for internal organs, as well as mental health and mood via the limbic system in the brain.