The main differences between red light and near infrared light (nir) 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 (nir)
Wavelength range 600–700 nm (例えば. 660 nm) 700–1100 nm (例えば. 850 nm)
Penetration depth 1–5 mm (skin layer) 5–10 cm (筋肉, bones, 関節)
Primary targets Skin, superficial tissues Deep tissues, organs, 脳
Importance:
Red light is very beneficial for skin health (コラーゲン生産, 創傷治癒).
NIR light reaches muscles, 腱, and joints, providing better pain relief and improved recovery.
- Bio-effects
赤信号 (例えば. 660nm)
Boosts collagen and elastin production → anti-aging, reduces acne/scars.
Reduce surface inflammation (例えば. 日焼け, 湿疹).
毛包を刺激します (for hair growth devices).
近赤外光 (例えば. 850nm)
Accelerate muscle repair → post-exercise recovery, relieve delayed onset muscle soreness (DOMS).
Reduce deep inflammation (例えば. 関節炎, tendinitis).
Enhance brain function (emerging research in neuroprotection).
- How to choose the right wavelength?
For skin and beauty
Best: 660nm赤色光 (例えば. for wrinkles, ニキビ, 酒さ様皮膚炎).
Device:
Merican Red Light Therapy Panel M1
Pain and muscle recovery
Best: 850nm near infrared (or 660nm + 850nm dual wavelength).
Device:
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: 赤 + NIR combination (例えば. 660nm + 850nm).
Example: Merican Red Light Therapy Bed M-MB
- 重要な考慮事項
Dual wavelength devices (例えば. 660nm + 850nm) 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).
- 安全に関するヒント
目: NIR light penetrates eyelids → wear goggles for prolonged exposure.
禁忌: Avoid if pregnant or with active cancer (consult your doctor).
Final Tip: If unsure, choose a red/NIR combination device (例えば. メリカン). Start with 10–15 minutes, 3–5 times per week and adjust based on results.
