How to Buy a Red Light Therapy Device: Complete Guide
Buying a red light therapy device can be confusing. Here’s what to look for and what to avoid. Key Specs to Check 1. Wavelength Most important spec. Look for: 660nm (red) — Skin and superficial tissue 850nm (near-infrared) — Deep tissue, joints Best: Dual wavelength (660nm + 850nm) 2. Power Output (Irradiance) Measured in mW/cm² at treatment distance Minimum: 30 mW/cm² at 6 inches Optimal: 50-100 mW/cm² at 6 inches Higher power = shorter treatment time 3. Treatment Area Small (face): 4" x 4" or mask Medium (single area): 8" x 12" Large (full body): 12" x 24" or bigger 4. EMF Levels Should be low or zero EMF Some cheap devices emit high EMF Look for brands that test and publish EMF data 5. LED Count and Quality More LEDs = more coverage Quality LEDs last longer and maintain power Look for brands that use branded LEDs (e.g., Osram, Epistar) Device Types Panels Best for: Body treatments, versatility ...