This Vision Guard lens cleaner is the solution to many of your sunglass lens problems. Not only can you use it to clean dirt and smudges from your lenses, but it can also be used to prevent your lenses from fogging. It also reduces static, which means that less dust will be attracted to your lenses and you will not have to clean them as often. The can also be used for other surfaces such as camera lenses and computer screens. If the surface has an anti-reflective coating, this solution will not harm it in any way. Using the cleaner is easy: simply shake, spray, and wipe with a soft lens cloth. The spray bottle contains one fluid ounce, or 30 ml.