**8nm wavelength laser can penetrate the epidermis to reach the
deep hair follicle tissue effectively,by special setting the pulse
duration guarantee the target tissue to generate sufficient thermal
damagr and the surrounding tissue is almost unaffected;the right
amount of energy density guarantee to provide sufficiently strong
enough output energy in the appropriate time to damage the target
tissue and normal tissue is almost equally affected;appropriate
measures to protect the epidermis guarantee to damage the target
tissueenough, while the epidermis is almost unaffected, thus
protect the safety of the treatment . Hair follicle tissue absorbs
the laser energy and heat then being heated to 5 degree, the hair
follicles and growth of stem cells lose the growth activity, so as
to achieve the purpose of permanent hair removal.
