This is no ordinary light bulb! This 60-watt CFL light bulb also acts as a room air purifier, removing contaminants and allergens in up to 12 x 12 square foot spaces. The secret: it releases negative ions that attract and remove allergens and contaminants (all which are positively charged). Bonus: negative ions have also been shown to impact serotonin, which enhances mood and energy! EnergyStar rated; this energy-efficient light bulb uses 80% less energy than standard incandescent light bulbs.