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What is ultra-narrow band LED light

What is ultra-narrow band LED light which
exerts excellent effects on human body
including hair growth or beautiful, glowing skin?

Irradiating ultra-narrow band red LED light on "plane" is excellent in reaching the deeper layer of subcutaneous tissue of the scalp and activating sufficiently various cells including dermal papilla cells, leading to hair growth and restoration.
In addition, not only red LED but also green and blue LED lights attract much attention.

Successful in developing equipment for irradiating narrow-band single color LED light on a “plane” basis

It still remains unclear. What we know now is that red light is most effective for hair growth and restoration. I use LED for facial treatment. For green LED light, it is effective for moisturizing face in middle-aged and older. Blue light is effective for restful sleep. This is what we know now.Red light penetrates the deepest into the body. Green light has a shallow skin penetration. Blue LED light only penetrates the surface of the skin. Red light feels warmest; green light feels somewhat warm; blue light feels least warm. However, irradiating all lights on the body at the same time is not effective, because all lights are mixed causing interference if irradiating wider-band light. This mechanism is similar to that of sunlight. As sunlight consists of various wavelength bands and interferes with one another, it causes no effect.

What made you come up with an idea of irradiating individual LED light?

Laser light has a short wavelength with no disturbance and is a single color light. In case of 630 nm light, almost all lights with a wavelength of 630 nm are irradiated. Laser treatment is good for treating the narrow area with surgical precision, but it is impossible to irradiate the whole face or scalp. In the United States, some doctors are attempting to make laser treatment more effective by moving the laser handpiece around so that the area to be treated will be covered. But this is inefficient.
Then, I came up with an idea of irradiating narrow-band light on a “plane” basis in some way. I predicted that irradiating ultra-narrow band light which has less interference among different bands of wavelengths will have different effects on the human body by wavelength. It was ten years ago when I started the research and development on a full scale. I continued to think how to produce LED light with ultra-narrow band close to the wavelength of laser light. Finally, I came up with an idea of higher power LED light.

How do you irradiate ultra-narrow band LED light?

What I used for pulling out light with various bands of wavelengths in ultra-narrow band was a laser bandpass filter. Of course, I requested a company specializing in phototherapy to create equipment which enabled light to be irradiated in a straight line. Letting light through a bandpass filter results in the reduction of light energy to several times from original one but creates ultra-narrow band light with a short wavelength. Next, by enlarging the light by concave lens, we made it possible to irradiate the light on a plane basis.

Activates not only dermal papilla cells but also many
different types of cells

You used LED irradiation equipment you developed yourself and irradiated ultra-narrow band red LED light on the scalp of 10 male patient monitors for 20 minutes once to three times a week for 3 - 8 months, did you? Looking at the course of hair growth, the efficacy rate is 100%. Of all, it was almost cured in two patients; 7 had complete response; 1 had partial response.

It was effective in almost all patients. The hair loss was decreased in most patients. When irradiating it for a long time, hair started growing in the substantial proportion of the patients.

Does ultra-narrow band red LED light activate dermal papilla cells?

I cannot say that clearly yet. It may activate not only dermal papilla cells but also many different types of cells. Presumably, narrow-band red LED light may be associated with many different types of cells, resulting eventually in decreased hair loss and new hair growth.
I have just started a joint research with Kyoto University Graduate School of Engineering, Department of Dermatology, School of Medicine, Kochi University and Osaka University Graduate School of Medicine.
We have already found out that ultra-narrow band LED light is effective and we can envision a success scenario to some extent. What we need now is to obtain research result and publish it.

It seems effective for skin regeneration as well.

In an experiment by Dr. Itami, Osaka University, he and colleagues also obtained result on wound treatment. So, I think it may be useful for activating cells. In case of bedridden patients, bed sores occur. I assume that the combination of ultra-narrow band red and green LED lights produce synergistic effects and makes bed sores smaller at an early stage.
If in-house LED equipment becomes widespread and ultra-narrow band red LED light is irradiated for 15 minutes every day, hair loss may be reduced and hair growth may be promoted. On the other hand, ultra-narrow band blue or green LED light is effective for beautiful, glowing skin. If a woman can maintain radiant and resilient skin same as that in her 20s or 30s when she turns 40 or 50 years, it would be wonderful. In addition, ultra-narrow band blue LED light is very effective for making people get to sleep, which is good news for people suffering from insomnia.
I hope that less expensive equipment will be developed in the future and that ultra-narrow band LED irradiation will become widespread so that it can be performed more easily in various fields.


Interviewer/writer: Akiyoshi Sato Photographer: Yoshizumi Izuka

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