1. a: first of all, do you know what UV light is? What is its function?
UV is the abbreviation of UltravioletRays in English, that is, ultraviolet rays. The wavelength range of ultraviolet rays is 1 ~ 4 nm, which is an electromagnetic wave between X-rays and visible light. What does this mean? This means that this kind of light is a kind of energy light, which has penetrating effect and will produce heat when irradiated on the body.
Function: It is generally used for the treatment of vitiligo in medical treatment, which means that through this ultraviolet light irradiation, the subcutaneous tyrosinase in the white spot is directly activated to promote the production of melanin and turn white skin into black.
We can find a lot of instruments on the Internet for treating vitiligo with UV light. You can try to search them.
2. What is the function of some manufacturers using UV light in skin detectors?
regardless of whether UV light is harmful to the skin, some businesses in the market use UV light on skin detectors mainly to check spots and pores (on the epidermis). These two items are relatively the least scientific and technological detection items. Why? The spots on the epidermis can be found by looking in the mirror by ourselves. Why do we need instruments to detect the spots that we can also find? As a skin detector, we think it is more meaningful to see the spots under the dermis. Therefore, as long as a skin detector with polarizing function is enough to check the spots and holes.