In previous articles I have talked about which masks need to be cleaned and which masks do not need to be cleaned after application. At that time, I simply gave an example of hyaluronic acid mask and herbal mask, but there is no specific division of types, today I will talk about the mask in the end which are divided into several categories. In fact, clinically the mask is divided into three main categories: The first category: medical masks, also known as “mechanical” masks. The second category: ordinary masks, that is, you will seek beauty at home always have the mask. The third category: harmful mask, to say something simple can also be called three no mask, mask packaging is neither makeup, nor mechanical name, moreover no production date, living off a three no products, so I call this mask harmful mask. So when you buy a mask, you must refuse this kind of three no mask, do not because of a certain netizen’s recommendation or microblogger’s force friends to use, which is very dangerous, this kind of mask we can not touch. So what is the difference between ordinary masks and medical masks? Because the ordinary mask does not go through a strict sterilization process (note that here does not mean that it is not sterilized), so the ordinary mask has no use in the clinical. But does it mean that you can’t apply this ordinary mask after surgery? No, we must choose the right indications for it. If we do the surgery for non-invasive surgery, the skin are intact, on the assumption that we do the surgery is deep blue radio frequency, then deep blue radio frequency is no damage to the skin, then this time the use of ordinary mask is completely fine, we can all rest assured that use.