Neutrogena Light Therapy Acne Spot Treatment Pop-up pimple? Light is on it.With dermatologist in-office technology, the spot treatment harnesses the power of light therapy to target and treat breakouts fast. This clinically proven two-minute acne spot treatment uses red and blue lights to reduce breakouts without flaking or burning. The easy-to-use portable design is ideal to treat acne anytime-anywhere! Battery can be replaced for continued use. HOW TO USE Turn on device by pressing the button for a FULL second until it powers on.Apply directly on skin so light is fully surrounding pimple.Treat for two minutes. Device will automatically turn off after two minutes.