Nasal spray with Hydrastis Canadensis and Luffa (hydrate and loofah) Dosage and method of use Adults and children over 6 years: Spray 1-2 times every 3 to 5 times a day. Children over 2 years: Spray 1 time in each nostril 2 to 3 times a day.Use when children are upright and not lying ..