Why did my skin turn black after finishing the medical treatment?

　　Many people choose to do medical cosmetology in order to improve the skin and make the skin better, but after doing medical cosmetology, protection and care are not done properly, and the skin will turn black.

　　Let’s take an inventory today. The following cases come from real feedback from fans.

　　1. Red and blue

　　In order to get rid of acne, I took red and blue light in the hospital, but my skin turned black that day! This is entirely possible because the light is very close to the face when shining red and blue light, and the energy of light is also very strong in order to effectively kill bacteria in the pores.

　　Ultraviolet rays can cause the skin to darken. The wavelength of ultraviolet rays is 280-400nm, and then there is blue light next to ultraviolet rays.

　　Although the intensity of blue light is inferior to ultraviolet light, if the skin is irradiated with high intensity at a close distance and your skin is thin or easy to tan, then blue light irradiation is likely to cause the skin to darken. Just like tanning, the skin becomes darker after the blue light is irradiated, and you can only continue to do sunscreen. After 3-6 months, the skin will generally return to white.

　　2. Fruit acid rejuvenation

　　Every time I finish peeling with fruit acid, my face is quite white, but after 1 month of maintenance, my face turns black. Why does it turn black after sunscreen and moisturizer?

　　Fruit acid peeling is used for whitening, the effect is obvious. The higher the concentration of AHA, the more obvious the whitening effect. The concentration of mild peel fruit acid is 30%, and some high concentrations may reach about 50%. Of course, the higher the concentration, the greater the irritation. Don't blindly pursue high concentration. Finding a reliable doctor is the last word.

　　Why does the skin turn black after the original whitening fruit acid rejuvenation?

　　It is related to sunlight and skin.

　　1) The stronger the sunlight, the higher the probability of darkening.

　　2) Weak skin makes it easier to tan

　　After rejuvenating the skin with fruit acid, the stratum corneum of the skin is damaged and the skin becomes thinner. If you encounter the same sunlight as before, the thinned skin will be more sensitive to light, and the probability of darkening will increase. Therefore, after the fruit acid peels the skin, it is necessary to more strictly block the sun.

　　3. Laser

　　It has been more than 20 days since the face has been lasered. When will the black face recover?

　　Laser is used in medical aesthetics and can improve many skin problems, such as blemishes, acne pits, and hemangioma diseases.

　　The wavelength and radiation intensity of the laser have been carefully calculated to minimize damage to the skin; however, everyone has different skin types and the level of doctors is also different, so laser cosmetics that are not suitable for skin conditions can cause skin to darken.

　　This is because laser light is a high-energy photon. After irradiating into the skin, if the energy is too strong, it will cause two different skin darkening conditions.

　　1) Damage to the skin causes inflammation, which leads to pigmentation.

　　2) High-energy light intensity induces melanin production.

　　If it is just to induce melanin production, the skin can turn white after a few months of strict protection from light. If it is pigmentation after inflammation, it depends on luck, and it may take longer to fade.

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