With red light therapy growing in popularity for skin care, 痛みの緩和, and wellness, many people wonder:
“Does any red light work for red light therapy?”
The short answer is: Not all red light is created equal.
While it may look similar to the naked eye, only specific wavelengths and intensities deliver true therapeutic effects.
Let’s explore what makes red light therapy effective—and what to look for when choosing the right device.
Why Not All Red Light Works for Therapy
Wavelength Matters
Red light therapy works because of how light interacts with your cells—specifically the mitochondria. Only certain wavelengths can penetrate the skin deeply and trigger healing responses.
The most effective wavelengths are:
630nm – 660nm (赤信号): Targets skin and surface tissues
810nm – 850nm (近赤外): 筋肉や関節の奥深くに浸透します
❌Regular red bulbs or LED lights (like those in homes or lamps) usually fall outside this therapeutic range.
Intensity and Power Output
Even with the right wavelength, a light must deliver enough energy (irradiance) to reach the cells and create change. Weak red lights may feel warm or look bright, but they don’t deliver medical-grade results.
✅Medical or wellness-grade red light therapy devices are designed to produce 5mW/cm² to 200mW/cm² of power, depending on the treatment depth.
Treatment Duration and Consistency
Therapeutic red light requires controlled exposure times (usually 10–20 minutes), repeated several times a week. Just sitting near a red-colored lamp won’t offer the same benefits.
What to Look For in a Red Light Therapy Device
To get real benefits, choose a device that offers:
✅ Wavelengths between 630–850nm
✅ Proven irradiance output (look for real test data or certifications)
✅ Medical-grade or FDA-cleared components
✅ Built-in timers or usage guides
✅ Consistent coverage and light distribution
結論: Does Any Red Light Work for Therapy?
いいえ. True red light therapy relies on specific wavelengths, power levels, and exposure times to work effectively. While any red-colored light may look similar, it won’t offer the same healing or anti-aging benefits as a professional-grade device.
