: Chemical sprays (like those with oxymetazoline) shrink blood vessels. When they wear off, the vessels swell up more than before—a condition called "rebound congestion".
A homemade nasal decongestant spray can provide quick, natural relief from stuffiness caused by colds, allergies, or dry air. Unlike medicated sprays (which can cause “rebound congestion” if overused), DIY saline-based sprays are gentle, non-habit forming, and safe for daily use. homemade nasal decongestant spray