A sinus infection is inflammation or swelling of your sinuses. Normally, your sinuses are filled with air. When the sinuses become blocked and filled with fluids, bacteria can grow and cause infection. This infection is sinusitis. This patch is designed to support the body to deter problematic sinus conditions. Sinus uses frequencies of nutrients that are designed to accelerate the natural healing process of the sinus cavity. Consider using when experiencing: Inflammation and Blockage: whether it’s from pollution, allergy or infection, the sinus shuts down and becomes infected.