Sterimar Stop and Protect Cold and Sinus Relief What is Sterimar Stop and Protect Cold and Sinus Relief? Sterimar Stop and Protect Cold and Sinus Relief is clinically shown to unblock and relieve nasal passages. The solution uses natural seawater, and gently draws and drains even thick mucus. This allows you to breathe naturally and prevents further infection. The solution can provide long-lasting hydration and forms a protective film on the nasal lining, to strengthen the nose's barrier function. Suitable for breastfeeding mothers, pregnant women and children from 3 years old. Non-drowsy and preservative-free. Please note that results may vary.