12/23/2025
Don’t take it from us…..ask ChatGPT!
Here’s a clear, no-fluff breakdown of 850 nm vs 950 nm red / near-infrared light, and why they are not interchangeable 👇
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🔴 850 nm (Near-Infrared – the gold standard)
This is the wavelength you see in most high-quality red-light therapy devices.
Why 850 nm is preferred:
• Deep tissue pe*******on (muscle, joints, tendons, ligaments)
• Strong mitochondrial activation (cytochrome-c oxidase)
• Proven benefits:
• Reduced inflammation
• Faster recovery
• Pain relief
• Improved circulation
• Clinically studied and widely supported by research
• Used in sports recovery, equine therapy, human rehab, physical therapy
✅ Best for:
• Soreness
• Injury recovery
• Joint & tendon support
• Performance & post-exercise recovery
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🔴 950 nm (Near-Infrared – less effective)
This wavelength is far less common in true therapeutic devices.
Limitations of 950 nm:
• Penetrates tissue but is less biologically active
• Lower absorption by mitochondria
• Less stimulation of ATP production
• Minimal clinical evidence supporting strong therapy benefits
• Sometimes used in:
• Heat-based applications
• Passive warming
• Lower-cost devices (often marketed vaguely)
⚠️ Often confused as “better because it’s deeper” — but deeper does NOT mean more effective if cells don’t respond to it.
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🧠 Why absorption matters more than depth
Think of it like this:
• 850 nm = key that fits the lock
• 950 nm = light that passes through but doesn’t “turn anything on”
Mitochondria respond best to ~630–660 nm (red) and ~810–880 nm (near-infrared)
That’s why 850 nm is the sweet spot.
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🐎 Equine-specific takeaway (important for FYNX-style products)
For horses:
• Muscle density is high
• Tendons & joints are deep
• Recovery demand is intense
👉 850 nm is absolutely the correct choice
👉 950 nm offers little therapeutic advantage for performance horses
This is exactly why professional veterinary and sports-grade devices stick with 850 nm.