Allergies are on the rise. When exposed to particles and gases that enter our bodies, defenses are built up for future invasions. When exposed again to the same particles and gases, our body fends off their potential danger by neutralizing them. Airborne allergens come from animals, plant, flowers, volatile organic compounds (VOCs), molds, and dampness. As our bodies react and build up defenses, we get a runny nose and sniffle. Our natural defenses also run us down and sometime can ruin the day. It is unclear why, but more and more of us are being affected by allergens. Improving air quality by removing these airborne allergens is an excellent way to remove the sources of irritation before they enter the body. Air purifiers designed to cleanse airborne allergens can be very effective in reducing allergies.