How do I choose the best and most effective hair loss treatment laser?

Each different wavelength used in hair loss treatment lasers has a different treatment and penetration depth into the scalp. The blood capillaries in direct contact with the dermal papilla lie in the hypodermis (the deepest inner layer among 3 layers of skin (scalp) tissue.

The 670nm wavelength laser light mainly treats the surface of the scalp and does not penetrate deeply into the scalp so the 670nm wavelength alone is not enough for effective hair loss treatment.

Longer wavelength (780nm, 830nm) lasers are able to penetrate more deeply into the skin tissue. However, substances within the skin tissue such as melanin, water and haemoglobin all absorb and weaken the laser light.

Light at 830nm wavelength is the least absorbed by those substances, which means it retains more of its beneficial power to energise the hair follicles because more of the light energy is absorbed into the blood cells to increase circulation and the delivery of more nutrients and oxygen to the follicles.

In the cosmetic and therapeutic laser device market, each treatment laser uses different wavelengths. 650nm/670nm are visible (red) light, while 780nm and 830nm are infrared light with more power and stronger penetrating ability and effectiveness.

Lasers around the 650nm wavelength are the most commonly used in cosmetic and therapeutic lasers because the light is a clear, bright red which is visible to the eye so it looks as if it really works for treatment and in fact, it actually does have a therapeutic effect.

Also, the 650nm wavelength is the most widely used in the cosmetic laser market and is cheaper to use than longer wavelength lasers.

However, the more expensive infrared lasers which use 780nm and 830nm wavelengths are able to penetrate and stimulate deeper into the skin tissue and so are more effective in treatment although they are rarely used by other manufacturers of cosmetic and therapeutic lasers.

The most effective hair loss treatment lasers are multi-wavelength and use one 670nm, one 780nm and one 830nm laser in each of their 7 laser clusters and are the only hair treatment lasers on the market which offers this technology. The 3 different wavelengths irradiate the same area of the scalp simultaneously, each working at different layers and thus maximising the benefit and proving a more effective treatment.

There are many scientific studies for each laser wavelength that show how effective it is in therapeutic treatment – you can read more here about the different effects of each wavelength - http://www.laser.nu/lllt/Faq1.htm.