Because of its physiological structure, human skin has sensitive functions such as touch, pain and temperature, which constitutes a complete protective layer. Moreover, the skin is composed of multiple tissue layers, and each layer has different cells. When laser irradiates the skin, if its energy (power) is too large, it will cause skin damage. Of course, the lesion can be repaired by tissue. Although the function is reduced, it does not affect the overall functional structure, and the damage to the eyes is much lighter. But we must also attach great importance to it.
The threshold of laser damage to skin is also very high, and the output energy of various lasers is very different. At present, high-power lasers are widely used. The damage degree of laser to skin is related to the irradiation dose of laser, the wavelength of laser, the depth of skin color, tissue moisture and the thickness of skin stratum corneum, among which the first three factors are the main ones.
Can laser freckle hurt the skin?
Laser freckle removal will not harm the skin.
The treatment time of laser depigmentation is relatively short, only about ten minutes at most. After each treatment, the skin should be given a metabolic process. Therefore, the interval of laser pigmentation treatment is usually 3 months. According to the size, quantity and depth of pigment and vascular diseases, some treatments can achieve the expected effect once or twice, and generally it takes 4 to 6 times to completely solve the problem.
Spots are generally pigmentation formed after birth. Laser freckle removal can help patients with pigmented spots realize their dream of freckle removal. Laser freckle removal has been very safe and effective after long-term practice. The principle of laser speckle removal is that different types of lasers produce different colors of light, and the laser of a certain wavelength is only absorbed by the pigment of the corresponding color.
Therefore, the shaping mechanism uses a laser instrument to generate a high-intensity beam to make the pigment fade, so as to achieve the purpose of removing pigment spots. Moreover, only diseased cells can absorb specific laser, and normal skin tissue will not be damaged, so laser depigmentation will not leave scars. During the operation, the subject will feel like a needle, and there is no need to use anesthetic drugs.
References:
Laser Freckle Removal-Baidu Encyclopedia