Red and infrared LED light therapy (What does red light therapy do?) is highly effective and extremely safe for both cosmetic purposes and health conditions (back pain, musculoskeletal injuries, seasonal affective disorder, etc.). With a high-power LED unit, 10 minutes may suffice, though 20 minutes (and occasionally 30 minutes) would be preferable. A high-power device is one delivering approximately 60-200mW/cm². Anything exceeding 200mW/cm² for the body or 120mW/cm² for the face is unwise unless conducted in a professional environment with meticulously crafted protocols and for a briefer duration…