78 oz | CVS The allergy spray provides allergy relief of indoor and outdoor nasal allergy symptoms; nasal congestion, itchy, runny nose and sneezing for up to 24 hours. It can be used once or twice daily for allergy relief in children +12 years old. Compared to steroid allergy sprays, which require a longer, multi-step process in the body to start to work. Children’s Astepro Allergy is a steroid-free allergy spray that provides long-lasting allergy relief.