Laser Beauty Machine for the Treatment of Pigment Pathological Changes
Since 1960, continuous laser beauty machine was used to treat skin lesion with pigment, but the curative effect is not ideal, side effects are more and obvious, which is difficult to be accepted by the customers. Then according to the absorption peak of pigment, people develop many new type of laser beauty machine, mainly the short pulse laser beauty machine used to remove endogenous or exogenous skin pigment. Endogenous skin problem is human body itself produce some of the spots and color pigment problems such as moles. Exogenous pigment problem is human body acquired the problems of pigment for some reason, mainly including tattoos and post-inflammatory hyperpigmentation caused by injury. The efficacy and safety are improved greatly.
Among the beauty machine for the treatment of pigmentary lesions, continuous laser beauty machine includes carbon dioxide laser, hydrogen laser, copper vapor laser and so on, which has been clinically used to remove pigment from the skin and the clinical curative effect is different. Due to the water absorption of co2 laser and heat conducted by epidermis, the energy density carbon dioxide laser is low so that it can be applied to the spots successfully. All laser beauty machines can cause nonspecific damage. However, heat dispersion can lead to further related thermal damage, causing empyrosis and the change of skin pigment.
Melanin is included in melanosome whose size is 0.5 to 0.5 um. It is confirmed that melanin is the target tissue in the treatment of endogenous skin pigment. The wavelength of light absorbed by melanin is in the range of 351 to 1064 nm, so a lot of laser beauty machine can treat it effectively. Doctors often choose the ideal penetration depth clinically and can avoid other chromophore’s absorption peak of laser. Laser with 510 nm wavelength is the most ideal to treat melanin, which is very suitable for laser treatment of skin pigment. For deep pigment, such as nevus of ota, laser with longer wavelength, penetrating deeper is more effectively. According to the selective photothermolysis, laser beauty machine’s pulse with should be 70 to 250ns.
What mentioned above is the theoretical knowledge of laser beauty machine for the treatment of pigmentary lesions. If you have any questions, please contact our online service.