Ayurveda believes the nose to be the doorway to the head and our consciousness and it is the passageway in which the life force energy enters the body in the form of prana (oxygen) so the idea behind nasa is the keep this passageway clear and healthy so that there can be a free flow of energy. The nose is the preferred channel for treating various conditions of the eyes, ears, nose, throat, head and diseases above the chest. For example, headaches, migraines, sinusitis, dizziness, sleep disturbances, nasal polyps, frozen shoulder and many other conditions.The use of a fatty medium such as ghee or oils allows the medicine/herbs to cross the blood-brain barrier. Dependent on the condition the medium will vary from use of decoctions, herbal oil or ghee based drops, supported with fumigation and/or steam treatments.