Most devices combine visible red light in the ~630–660 nm range with near‑infrared wavelengths roughly in the 810–940 nm range. Many panels and lamps offer multiple combined settings (for example, 660 nm, 850 nm and 940 nm) so users can target different tissue depths.
Session timers commonly range from about 5 to 30 minutes. Product descriptions often recommend consistent use several times per week—for example, about 3–7 sessions weekly, with many examples suggesting 10–30 minute sessions depending on the device and treatment area.
Intensity varies by device and is typically reported as irradiance (mW/cm²). Smaller masks often list irradiance values in the tens of mW/cm², while larger panels can report substantially higher outputs—examples in listings include values around ~16.7 mW/cm² up to panel outputs near 90 mW/cm² at specified distances.
Common precautions include adult supervision for use, consulting a doctor if you are pregnant or nursing, and following the manufacturer’s instructions. Some products also include or recommend protective eyewear; check each device’s safety guidance before use.
Some devices combine red/near‑infrared light with other features such as constant‑temperature heating, adjustable heat levels, vibration massage, memory settings, touchscreen controls, and preset modes. Availability varies by model.