In fact, the method of maintaining sunglasses is like maintaining general glasses. It is a habit to clean, stack, and store. Sunglasses often wear off and wear, and accidentally scratches. So there are some small details to remind you: when the sunglasses are stained, don’t use your nails to smash, it will easily scratch surface. When the sunglasses are not worn, many people will hang them on their heads, collars or pockets. At this time, the body's movement range should not be too large to avoid tearing or crashing. Or someone will put it in the handbag. It is recommended that you put it in a hard case and put it in the bag to avoid being worn by small things such as keys, combs, copper plates, etc., or contaminated with lipstick and other cosmetics.