First, you should prepare two pieces of softly fiber cloth. Second, bring some water and put some liquid soap into the water. Then put one of the clothes in the water until the cloth is wet through. Third, use the wet fiber cloth to clean the cover of sunglasses. After the cleaning, you can use the dry cloth to clean it again. To take care of your sunglasses, you should wash them regularly and keep them away from sunshine when you are not wearing them because frames are easily fading when they expose to the sun. What is more, you should put your sunglasses in the glass box every time when you put down your glasses. Be careful of using your sunglasses, which may help you take care of them.