Gillette Braun is a double-layer blade, which is very clean (when shaving, the first knife pulls out the beard, the second knife shaves the part in the skin, and the third knife shaves the root. Generally, there is no protective net and it doesn't really work. However, shaving generally causes physical scratches on the epidermis, so it is best not to mix it with many people, which is easy to get infected with germs. When shaving, it is best to disinfect with shaving water and lightly anesthetize the epidermis. ) but it's a little harmful to the skin.
You choose according to your own situation.