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The scientific theory behind LLLT is the same as that of other laser therapy equipment: the laser’s light encourages hair growth while decreasing hair loss. This technique, known as photo biotherapy, works by stimulating protein production and metabolism in cells through the absorption of laser light.
The laser diode wavelength and output power used by Kiierr Laser Hair Growth Caps are the same. With 272 laser diodes, this is one of the best LLLT devices available for the price.