Laser Beauty Machine Supplier - Beauty Equipment ManufactureThese factors determine the quality of picosecond laser-Beijing Zhenhuimei Beauty Equipment Co., Ltd.
The shorter the pulse width, the stronger the blasting ability of the laser, and the better the cosmetic effect of laser freckle removal.
is hyped about the pulse width. In order to confine the thermal damage to the ideal target tissue, the pulse width of the laser should be shorter than the thermal relaxation time of the target tissue. Because when the pulse width is too long, the heat will be transferred from the cosmetic target to the surrounding tissue, resulting in adverse reactions such as scars and permanent pigmentation. At the same time, the target tissue cannot be fully cosmetic due to heat loss.
Appropriate energy density
In order for the target tissue to fully absorb energy, the target tissue should reach a certain temperature and last for a certain time (pulse width). When the energy density is too high, even if the wavelength and pulse width are appropriate, excess heat will be generated , damage the surrounding tissue structure and cause adverse reactions.
Spot size
Because a large spot reduces scattering at the edges, it penetrates deeper into tissue than a small spot. However, the large light spot reduces the safety of cosmetology due to the large volume of heated tissue. Therefore, the size of the cosmetic spot should match the target tissue, so that the target tissue can fully absorb the heat, and minimize the adverse reactions caused by the energy absorbed by the surrounding tissue.
