Can laser really whiten skin?

In daily life, we need to take good care of our skin every day. The two most important steps in skin care are hydration and whitening. No matter whether the skin is dark or not, whitening is needed, because there is a saying that "whiteness can cover up a hundred ugliness". There are many ways to whiten your skin. Recently, the most popular method is laser whitening, but this technology is not very mature. Can laser really whiten your skin?

The photothermal effect of laser is affected by three factors: wavelength, pulse duration and light energy density. The wavelength should be in black

Select the light with the longest wavelength within the range where the pigment absorption is the strongest, because the wavelength of the laser determines the depth of penetration into the skin. The longer the laser wavelength, the deeper the depth. The pulse duration should be shorter than the thermal relief time required by the hair follicles to minimize indirect thermal damage.

hurt. The light energy density must be greater than or equal to the threshold for tissue destruction. ?

The melanin in the epidermis competes with the melanin in the hair follicles for energy absorption, so the epidermis should be cooled, especially for the skin.

Darker patients. Contact skin cooling should be performed before, during, and after surgery. A refrigerant spray may also be used prior to treatment. Cooling measures can effectively reduce the occurrence of postoperative pigmentation, blisters and scars. In order to properly protect the epidermis and the superficial dermis

Under this premise, a laser with higher energy can be used. By studying the absorption spectra of melanin and oxyhemoglobin to light of different wavelengths, it was found that the absorption rates of the two were similar in the longer wavelength lasers used for hair removal. Therefore, when removing hair, you should squeeze the skin to eliminate

Laser technology in capillaries has now moved beyond the experimental stage, and physicians willing to perform this surgery should carefully review existing technology and receive appropriate training. As technology advances, permanent hair removal will become safer and laser machines will become smaller and faster.

Fast and efficient. Blood disturbance.

Through the description in the article, we can also get an answer, that is, laser can whiten your skin. So if you want to whiten your skin, you can choose laser whitening for skin care. Of course, there are many other ways to whiten your skin in daily life. Dietary conditioning is one of them. You can eat more foods containing vitamins, which can also whiten your skin.