Now many people like to wear Face Mask when they go out, especially women. They even wear masks on sunny days or when they go out at night, and many prefer to use disposable masks for easy portability. It can be said that disposable masks have become a household hygiene product. However, the following details need to be paid attention to when using disposable masks. If not used properly, they not only fail to filter the air, keep out all kinds of small organisms, and may cause "little troubles" for themselves. 1. Make sure it`s a one-off It is said to be a Disposable Face Mask, but many people do not use it as a Disposable Mask. Many took off their masks and put them in their pockets. They will wear it next time they go out. As you can imagine, masks without packaging bags are difficult to ensure hygiene. If you wear a mask again, its hygiene is also worrying. Disposable masks are mostly made of fibers and cannot be washed or recycled multiple times. They can be destroyed after use. 2. Do not wear black or dark masks Masks have changed from white or light blue to colorful, and many young people especially like black masks. In fact, black masks or dark masks are dyed with dyes, so they are not very good for the human body. In addition, if they are dirty, people will not easily see them and continue to wear them, which is not conducive to the health of the oral cavity and respiratory tract. 3. Shelf life of masks I believe that many people have not noticed that disposable masks actually have a shelf life. Once expired, please do not use. When purchasing, you should also check the production date and shelf life. Don't buy a Disposable Medical Face Mask that has no expiration date. 4. Pay attention to the front and the back In fact, disposable masks also have two sides, instead of hanging on the ears. In general, those with darker colors will have a chafing sensation when feeling it. One side is the front and the back of the mask is slightly lighter in color. It feels smooth to the touch. When we wear a mask, we must put the back of the mask inward, close to our skin, and the front of the mask outward. 5. Not suitable for special occasions Disposable masks are only suitable for ordinary occasions. In case of cloudy weather, anti-haze masks should be used. Special masks are required for special workplaces, such as spray paint, brushing, and dust masks. Doctors should use medical masks, etc. Don`t think that wearing disposable masks is okay.