Laser hair removal is based on the principle of selective photothermal kinetics. By reasonably adjusting the laser wavelength and energy pulse width, the laser can pass through the skin surface to reach the hair follicle at the root of the hair, and the light energy is absorbed and converted into heat energy that destroys the hair follicle tissue, thus making the hair lose its regeneration ability without damaging the surrounding tissues and causing slight pain.

Precautions before laser hair removal:

1. Before laser hair removal, clean and disinfect the parts that need hair removal. Some women wax their hair at home. At this time, it is best to use a small amount of talcum powder to absorb the oil on the skin surface and enhance the adhesion of wax; In addition, because capillaries and capillaries are concentrated in hair roots, it is easy to cause pain when pulling hair;

2. Before laser hair removal, wrap the ice with a towel and apply cold compress to the hair removal part to relieve the pain. It is not advisable to use too much force when depilating, otherwise it will irritate the skin and aggravate the pain;

3. For patients with dark skin type III-V, avoid sunlight as much as possible before operation, and it is best to use sunscreen for 4-6 weeks. People with pigmentation tendency can also be prevented by hydroquinone.

4. The skin must be prepared before the operation in the treatment area, and all the hair must be shaved.

Nursing care after laser hair removal;

1, please avoid sun exposure for half a year after hair removal, and apply sunscreen lotion instructed by the doctor on the affected area to reduce sun exposure;

2. After hair removal, there may be slight redness, skin sensitivity, fever or itching at the hair removal site. If you feel pain, use ice to relieve it;

3, pay attention to the hair removal parts do not burn with hot water and scrub hard.