A method of treatment and delivery device for mixed carbon dioxide, carbonic acid, saline and optional active additives for treating head ailments includes delivery of dosage of the treatment at specified flow rates, using a) main housing having a hollow central area containing the dosage； b) a dosage dispenser head located at the distal end of the main housing, and having at least one flow channel for movement of the dosage from the main housing through the dosage dispenser head and to external of the dosage dispenser head； c) a dosage release control component located between the main housing and the dosage dispenser head to permit flow of the dosage through the dosage dispenser head in response to increased pressure against the dosage； and d) a pressure-changing moveable component on the main housing.
