Start with the instructions for your pair
Prepare a clean optical cloth, lukewarm water and a suitable cleaner. Check the lens and frame manufacturer’s directions because coatings and materials differ. This guide concerns ordinary spectacles and compatible sunglasses, not contact lenses or electronic smart glasses. Product-specific restrictions take priority over general advice. Contact lenses must not be washed using this method, and unusual frame materials may need different care.
Remove loose dust before tackling grease
Wash your hands, then gently rinse the glasses under lukewarm running water to remove particles before wiping. If the manufacturer permits it, use a small amount of mild, pH-neutral dishwashing liquid without lotion or abrasives. With your fingertips, gently clean both lens surfaces and the frame, then rinse the cleaner away completely. Avoid hot water and do not press hard to remove a stubborn mark in one pass.
Dry with a clean cloth and light pressure
Gently dry the lenses with clean optical microfiber, supporting the frame near the part being cleaned. Pulling on the opposite temple can twist the frame. A shirt hem or paper towel is a poor substitute even when it feels soft: trapped particles can be dragged across the surface. Replace a dirty cloth with a clean one instead of trying to polish harder.
Troubleshoot streaks before rubbing again
First consider leftover cleaning solution, an oily cloth or fabric-softener residue from washing it. Rinse the glasses again and try a clean cloth. Follow the microfiber’s washing instructions; ZEISS recommends water no hotter than 40 °C and no fabric softener. If haze or lines remain in the same place after gentle cleaning, ask an optician to inspect the glasses: the problem may be damage rather than dirt.
Choose a compatible cleaner when travelling
Use a product explicitly suitable for your spectacle lenses and coatings, following its directions. A purpose-made optical wipe is not interchangeable with a general disinfectant wipe. Do not substitute hand sanitiser, window cleaner or a solvent. Check compatibility separately for frames made from unusual materials. Keep the cloth somewhere clean, or the travel kit itself can become a source of grit and persistent smears.
Do not polish scratches with toothpaste
Toothpaste, baking soda and other household abrasives can damage surfaces and coatings; they are not a safe repair for spectacle lenses. An optician can distinguish attached residue from scratching and discuss replacement of a damaged lens. Reduce further damage by keeping glasses in a clean protective case and never resting them lens-side down. Avoid storing them beside heaters or in a very hot car.
For health, poisoning or safety concerns, do not rely on this page to diagnose or assess an emergency. Contact qualified local services promptly when needed.
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