Although many products promise a permanent hair removal, usually they cannot deliver it. For the purposes of hair removal, the hair facts definition of "permanent" is being able to go a year after your final hair removal treatment without having to use another method of hair removal. Keep in mind that a year might not be long enough to determine true permanence, but most consumers would be happy to have one treatment a year.
The only method of clinically proven permanent hair removal is electrolysis. Some lasers and flash lamps have been able to achieve permanent hair reduction, as discussed below.
About laser hair removal this is done by delivering light at a specified wavelength from a hand piece into the skin, where it targets dark material (usually the pigment in hair). This is intended to cause thermal and/or mechanical damage to a hair follicle while sparing surrounding tissues. Therefore, this results in long- term or even permanent hair removal. The advantages of laser hair removal are that it is quite safe and regrowing hair will come back lighter and/or lighter in texture.
It might sound good, but there are still some disadvantages. For example, it is quite expensive and some customer found this treatment a bit painful. And still it is not proven whether it is permanent or not as regrowth rates have not been accurately established and cannot be predicted due to numerous variables.
