You should clean your sunglasses as often as Vision 20/20 Protocol Ebook Review needed. Here are some basic cleaning instructions: Rinse the sunglasses thoroughly with lukewarm water. Position the lens between your thumb and forefinger and gently rub both sides. You can also use lotion-free dishwashing liquid while rubbing the lens. Do the same for the frame and other parts of the sunglasses. Rinse with lukewarm water and dry them thoroughly with lint-free cloth. You might also want to use microfiber lens cleaning cloth for instant lens cleaning.
Keep your sunglasses in its case when not in use. This will prevent dust from accumulating in the surface. This will also protect your glass against damages caused by falling on the floor, bumping on hard surfaces, and other physical contacts. When your case is not yet available, leave the temples open and place your sunglasses in a flat surface upside down. The ear hook should be pointing upwards and the glass should be resting on the top of its eyewire and temples.
Wipe the sweat off your sunglasses immediately. This can damage special coating and finishing of your glass. In some cases, you can ask an optician to recoat your sunglasses. Do not leave your glass in hot or cold surfaces. Remember that sunglasses are different with one another. Care instructions might also be different so make sure to read it first before using your black sunglasses.