The main differences between red light and near infrared light (निर) are their wavelength, penetration depth, and bio-effects. Below is a detailed comparison and guide on how to choose the right wavelength for your needs:
- Wavelength and penetration depth
Parameters Red light Near infrared light (निर)
Wavelength range 600–700 nm (उदाहरण के लिए:. 660 एनएम) 700–1100 nm (उदाहरण के लिए:. 850 एनएम)
Penetration depth 1–5 mm (skin layer) 5–10 cm (muscles, bones, joints)
Primary targets Skin, superficial tissues Deep tissues, organs, brain
Importance:
Red light is very beneficial for skin health (collagen production, wound healing).
NIR light reaches muscles, tendons, and joints, providing better pain relief and improved recovery.
- Bio-effects
लाल बत्ती (उदाहरण के लिए:. 660एनएम)
Boosts collagen and elastin production → anti-aging, reduces acne/scars.
Reduce surface inflammation (उदाहरण के लिए:. sunburn, eczema).
Stimulate hair follicles (for hair growth devices).
Near infrared light (उदाहरण के लिए:. 850एनएम)
Accelerate muscle repair → post-exercise recovery, relieve delayed onset muscle soreness (DOMS).
Reduce deep inflammation (उदाहरण के लिए:. arthritis, tendinitis).
Enhance brain function (emerging research in neuroprotection).
- How to choose the right wavelength?
For skin and beauty
Best: 660nm red light (उदाहरण के लिए:. for wrinkles, acne, rosacea).
उपकरण:
Merican Red Light Therapy Panel M1
Pain and muscle recovery
Best: 850nm near infrared (or 660nm + 850nm dual wavelength).
उपकरण:
Merican Red Light Therapy Panel M2
Joints and deep tissue
Best: 810nm or 850nm near infrared (can penetrate bones/tendons).
Example: Merican Red Light Therapy Bed M4N
Overall Health
Best: Red + NIR combination (उदाहरण के लिए:. 660एनएम + 850एनएम).
Example: Merican Red Light Therapy Bed M-MB
- Key Considerations
Dual wavelength devices (उदाहरण के लिए:. 660एनएम + 850एनएम) provide the broadest benefits.
Power density (≥50–100 mW/cm²) is more important than wavelength alone.
Avoid cheap devices with unproven wavelengths (ineffective or unsafe).
- Safety Tips
आँखें: NIR light penetrates eyelids → wear goggles for prolonged exposure.
Contraindications: Avoid if pregnant or with active cancer (consult your doctor).
Final Tip: If unsure, choose a red/NIR combination device (उदाहरण के लिए:. मेरिकन). Start with 10–15 minutes, 3–5 times per week and adjust based on results.
