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Short answer: For most home red light panels, beginners should start around 12–18 inches away for 8–12 minutes. Move closer only when you understand the panel's irradiance and your skin response.
Red light therapy buyers get confused because brands advertise LED count, wattage, and huge irradiance numbers measured at unrealistic distances. A distance chart is more useful than a product list because it helps readers understand dose before they shop.
Red light therapy distance chart
| Distance | Typical use | Session length | Best for |
|---|---|---|---|
| 6 inches | Higher dose | 3–8 min | Targeted joints or muscles |
| 12 inches | Standard home use | 8–12 min | Skin, face, small body areas |
| 18 inches | Gentler broader dose | 10–15 min | Beginners and sensitive skin |
| 24 inches | Large-area exposure | 12–20 min | Full torso panels |
The mistake most shoppers make
They compare panels by total wattage. Wattage tells you how much power a device consumes, not how much usable light reaches your skin. The better comparison is irradiance at a realistic distance, ideally published at 6, 12, and 18 inches.
What wavelengths should beginners look for?
The common home-panel pairing is 660nm red light and 850nm near-infrared. Red light is often used for skin and surface tissue; near-infrared penetrates deeper. A beginner does not need exotic wavelength blends before they understand distance, treatment time, and consistency.
Simple starter routine
Use the panel 12–18 inches away for 10 minutes, three to five times per week. If skin feels irritated, increase distance or reduce time. If you feel nothing after two weeks and your panel publishes safe irradiance data, move slightly closer or add two minutes.