What we know about light and light protection
UV rays are divided into three main parts: UV-C 100-280 nm, UV-B 280-320 nm, and UV-A 320-400 nm, the latter also being further divided into two sub-parts UV-A1...
In our experience, there is one type of skin, healthy skin with normal function and structure. Of course, normal skin also shows individual differences in colour and texture, but it can be said that...