How to Use Red Light Therapy at Home
The Well Vetted Editorial Team · Editorial Team
Updated February 1, 2026
Dosing protocols, treatment distance, session length, and the mistakes that reduce effectiveness. A practical guide for home devices.
The Basics
Effective red light therapy requires three things: the right wavelengths (630–660nm red, 810–850nm NIR), adequate irradiance (100+ mW/cm² at treatment distance), and consistent use (3–5 sessions per week).
Bare skin gets the best results. Clothing blocks light. Treat each area for 10–20 minutes at 6–12 inches from the device.
Treatment Distance
6 inches: Maximum irradiance. Best for targeted treatment (face, specific joints). Sessions can be shorter (5–10 minutes).
12 inches: Moderate irradiance. Good balance of coverage and dose. Standard for most treatments (10–15 minutes).
18–24 inches: Lower irradiance, wider coverage. Used for full-body sessions (15–20 minutes).
Irradiance drops with the square of distance. Doubling your distance reduces power by 75%. Get close for best results.
When to Use It
For recovery: Within 30 minutes before or after exercise.
For skin: Any time of day, consistently. Morning routines work well.
For sleep: Red light (not NIR) 30–60 minutes before bed may support melatonin production.
Avoid using RLT immediately before intense exercise if you want the exercise to trigger maximum adaptation. Some evidence suggests it can blunt the hormetic stress response.
Common Mistakes
Using through clothing. Fabric blocks most light. Treat bare skin.
Standing too far away. At 24+ inches, most consumer panels don't deliver therapeutic doses.
Inconsistent use. Red light therapy is cumulative. 3–5 sessions per week, every week, for at least 4 weeks.
Skipping eye protection. The visible red light is intense. $10 blackout goggles solve this.
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