Glasses can develop a milky white patina due to improper cleaning or the use of certain chemicals. This dull layer not only affects their appearance but also your vision. However, with the right methods, you can make your glasses shine again.

Cleaning with Mild Soap Solutions
The simplest and safest method to try first is a thorough cleaning with a mild detergent.
Preparation: Fill a container with warm water and add one or two drops of a mild, fragrance-free, additive-free dish soap (e.g., pH-neutral dish soap). Alternatively, you can use a special eyeglass cleaning solution.
Cleaning: Soak the glasses in the soap solution for about 5 to 10 minutes. Then, use a soft microfiber cloth or your fingertips to gently clean the lenses and frames. Make sure to thoroughly clean all the nooks and crannies. Rinse and dry: Rinse your glasses with warm, running water. Dry them with a clean, lint-free microfiber cloth. Avoid using paper towels or cloths, as these can scratch them.

Baking Soda Cleaning
Baking soda is a mild abrasive and can help with tougher deposits.
Preparation: Mix a small amount of baking soda with water to create a thick paste.
Cleaning: Gently apply the paste to the affected areas with your finger. Gently rub it in using a circular motion. Caution: Be very careful, as excessive rubbing can scratch them.

Rinse and dry: Rinse your glasses thoroughly with warm water to remove any remaining paste. Then, dry them with a microfiber cloth.

Visit an optician
If the patina is particularly stubborn or the first two methods haven’t worked, visiting an optician is the best option. Opticians rely on professional ultrasonic cleaners that can remove even the finest dirt particles from the smallest crevices. Ultrasonic cleaning: An ultrasonic bath removes deposits without mechanical friction, thus eliminating the risk of scratches.
Important note: Do not attempt to remove patina with harsh chemicals such as acetone, nail polish remover, or alcohol-based cleaners. These can irreversibly damage the lens coating.
Which of these methods have you tried and which one worked best for you?