Principle of laser hair removal:
The principle of laser hair removal is the principle of selective thermodynamics. (that is, the selected wavelength only ACTS on melanin and does not affect the normal tissue of the skin. The selected pulse width only ACTS on the melanin in the hair follicle and does not affect the melanin in the basal layer of the skin.) The hair follicle and the hair stem are rich in melanin, which is distributed between the cells of the hair follicle stroma and can also be transferred to the structure of the hair (such as medulla, cortex, and fur). Laser hair removal laser can be used for the accurate and selective removal of melanin. When the melanin absorbs the energy of the laser, the temperature rises sharply, leading to the destruction of the surrounding hair follicles and removing the hair.
Laser hair removal is multi-wavelength, which can be used to selectively remove hair from different parts and different depths. Laser in laser hair removal tend to be only one wavelength, the effective penetration is limited, only for a certain type of skin treatment, and to another type of skin effect is limited, and all are level 4 laser hair removal laser which is dangerous to the human eye and soft tissue.
The preparatory work
1. Do not use depilatory cream, depilatory cream and other cosmetics before laser hair removal. Wash your body before shaving.
2. Firstly, determine the location and scope of the depilation, because the depilation is permanent, and the hairdressing effect can be achieved in a certain range.
3 you have a warm feeling, laser through the skin, this is normal phenomenon, the physician will selectively to particularly sensitive with surface anesthesia, complete hair removal in America can be happy.
4. After the laser hair removal, the doctor will apply a cold compress for 10 to 15 minutes, and the hair should be protected from the sun.