Balanced full spectrum compact fluorescent light (CFL) optimized to fight SAD and increase alertness. Increases: Alertness, energy, productivity, calcium absorption, visual acuity, immune system function, academic performance, concentration Decreases: Depression, anxiety, stress, sleep disturbances, migraines, sugar & starch cravings, alcohol cravings, errors and fatigue, aggression, PMS, SAD. Unlike any other fluorescents on the market, Indoor Sunshine bulbs contain a unique proprietary mix of over a dozen separate phosphors, designed to perfectly simulate the sun...indoors!