Mirror cloth is best to wash with detergent, do not use water. Use water (preferably warm water) to dissolve the detergent, then soak the glasses cloth into the inside for fifteen minutes and then clean it. Glasses cloth material is also very important, every time you wipe glasses, it is best to rinse with water glasses. Glasses should be kept clean, you can go to the optical shop with ultrasonic cleaning. If it is not convenient, you can use detergent to clean glasses, but try not to scratch glasses.