赤色光療法 (RLT) has gained enormous popularity for its wide range of health and beauty benefits—from skin rejuvenation to muscle recovery and pain relief. But if you want the maximum results, one crucial factor often overlooked is 波長.
Not all red light is created equal. Understanding the right wavelength can help you choose the most effective device or therapy protocol for your goals.
What Is Wavelength in Red Light Therapy?
Wavelength is measured in ナノメートル (nm) and determines how deeply light penetrates the skin and tissues. Red light therapy devices typically use wavelengths between 600 nm and 950 nm.
This spectrum can be divided into two key zones:
- 赤信号 (600–700 nm): Ideal for surface-level treatments
- 近赤外線 (nir) ライト (700–950 nm): Penetrates deeper tissues like muscles and joints
Wavelength Comparison Chart
| 波長 | Type | Depth | Best For |
|---|---|---|---|
| 620–630 nm | 赤信号 | 浅い (0.5–1 mm) | Skin tone, 炎症, minor wounds |
| 630–660 nm | 赤信号 | Mid-depth (1–3 mm) | Collagen production, アンチエイジング, ニキビ, 傷跡 |
| 810 nm | NIR Light | Deep (まで 5 cm) | Nerve repair, brain health, energy metabolism |
| 850 nm | NIR Light | Deep (まで 5 cm) | 筋肉の回復, joint pain, circulation |
| 940 nm | NIR Light | Deepest (~5–6 cm) | Internal organs, immune modulation, 炎症 |
How to Choose the Right Wavelength for Your Needs
1. For Skin Rejuvenation & 美しさ
Use: 630–660 nm
- Boosts collagen and elastin
- Reduces wrinkles, 傷跡, and redness
- Treats acne and sun damage
✅ Ideal for: Facial panels, LED masks, beauty clinics
2. For Muscle Recovery & Performance
Use: 850 nm
- Enhances blood flow and ATP production
- Speeds recovery post-workout
- Reduces DOMS (delayed onset muscle soreness)
✅ Ideal for: Red light beds, athletic therapy devices
3. For Cognitive or Brain Health
Use: 810 nm
- Penetrates the skull to support brain tissue
- May improve memory, mood, and focus
✅ Ideal for: Helmet-style devices, neurological research
4. For Pain Relief & 炎症
Use: 660 + 850 nm (Combo therapy)
- Reduces chronic pain (関節炎, back pain, sciatica)
- Decreases inflammation markers
- Treats deeper tissue injuries
✅ Ideal for: Clinical-grade full-body beds or targeted wraps
5. For Internal Health & Immunity
Use: 940 nm (with caution)
- Penetrates deepest layers
- Used in some advanced therapeutic or medical applications
⚠ Note: 940 nm produces more heat and less visible light. Devices must have adequate cooling.
Single vs. Dual Wavelength Devices
- Single wavelength: Good for targeted effects (例えば, 660 nm for skin).
- Dual/Quad wavelength: Offers broader therapeutic range—ideal for clinics or full-body systems.
💡 Most professional red light beds combine 633, 660, 810, そして 850 nm to maximize benefits.
What Wavelength Do Most Red Light Beds Use?
Top-tier red light therapy beds often use a combination like:
- 633 nm + 660 nm (for skin)
- 810 nm + 850 nm (for deep tissue & recovery)
- Some may add 940 nm for advanced medical protocols
Ask the manufacturer for a wavelength report or LED specification sheet before purchasing.
結論
Choosing the right wavelength is essential to unlocking the full power of red light therapy. Whether you’re aiming for glowing skin, 筋肉の回復, 痛みの緩和, or deeper therapeutic effects, matching the correct wavelength to your goal will deliver faster and longer-lasting results.
