One example of a good sinus rinse recipe uses 1 cup of distilled water, 1/2 teaspoon of pickling salt and 1/2 teaspoon of baking soda, states About.com. A variation of this recipe uses 1/2 teaspoon of sea salt instead of pickling salt.
Pour 1 cup of distilled water into a clean container. If tap water is used, boil it for sterilization and then let it cool, advises WebMD. Mix in the salt and baking soda. This solution lasts for up to three days at room temperature.
To use the solution, fill a syringe, squeeze bottle or nasal cleansing pot with the saline mixture. Insert the tip of the syringe or bottle into the nose, and squeeze gently. Aim toward the back of the head instead of the top, says WebMD. The wash is meant to go through the nose and out the mouth.
Blow the nose softly afterward unless a doctor has instructed otherwise. Repeat this several times a day, and be sure to clean the apparatus after each use.
Doing a saline wash before using sinus medications helps the sinuses absorb the medicine better, states WebMD. The solution can be warmed prior to application, but make sure that it's not hot.