With dermatologist in-office acne technology, Neutrogena Light Therapy Acne Spot Treatment harnesses the power of acne-fighting light therapy to target and treat breakouts quickly. Clinically proven to speed the reduction of breakouts, this acne spot treatment uses red and blue light therapy to swiftly treat pimples without flaking or irritating your skin. Its patent-pending design allows light to surround the pimple for effective, targeted treatment – blue light kills acne causing bacteria, while red light calms inflammation.