What happens in your body?
Due to the light waves the temperature in each hair root rises. As a result the protein, which is responsible for the hair growth, denatures. Once the hair follicles are not supplied anymore with needed nutrients, they are falling out and cannot regenerate themselves anymore.
The wavelenght of 808 nm has another advantage: The generated heat only reaches the skin areas which are occupied with hair papillae. Therefore, the remaining skin layers are not damaged. Additionally the neighbouring tissue is generally spared and also blood is not impaired, because the haemoglobin – the blood containing dye – does not react to the specific wavelength of the diode laser.
For the effectiveness of the treatment it is essential that the hair is in its growth phase. That means hair has an active connection to its root. Only this way light impulses can be transported to the hair root. To realize a permanent hair removal, various sessions are needed. Only that way every single hair can be reached in its according growth phase and be treated.