Is there any natural remedy for sinusis?

Nasal rinse may help: Sinusitis is an infection in the hollow spaces inside the face bones, and is treated with antibiotics to kill the bacteria while allowing the trapped pus or mucus to gradually flow out through the nose. To help mucus clear out of the nose, whether due to infections or allergies, one can try over-the-counter salt-water (saline) rinses. They are sold as a squeeze bottle and little salt packets.

Neilmed Sinus Rinse: Many times people call it sinusitis, but it's simply an allergic exacerbation that is causing one's sinuses to get inflamed and cause pressure and congestion. Often rinsing one to two times daily with a saltwater rinse can make a huge difference in decreasing inflammation within the sinus cavities.

Neti Pot: Nasal saline sinus washes are a great way to rinse out allergens from the sinuses. Steam vaporization can also improve congestion. I suggest dropping 1 drop of eucalyptus or peppermint in hot steamy water (or shower) to open the sinuses. Be sure to only use distilled water when washing the sinuses to avoid potential infection from tap water.