Most of the current lenses are made of resin. Resin lenses tend to attract dust in the air, and their hardness is actually not very high. Fabrics, tissues, and even lens cleaning cloths are not as soft as you might think. There are also many tiny dust particles on their surfaces. Wiping the lenses with clothes, tissues or lens cleaning cloths at this time is just like rubbing the glasses with sandpaper, which will cause more severe abrasion to the lenses!
Washing the lenses with water is the most scientific way!
Never dry-wipe the lenses. If the lens surface is dry and dusty, wiping it with a dry lens cloth, tissue, or even clothes will scratch the lens no matter how good the material of the cloth is. In fact, the lens cloth is for wrapping the glasses, not for wiping the lenses. In severe cases, it will cause the lens coating to peel off, crack, and the overall clarity to drop significantly, rendering the lens unusable.
(Peeling of the coating)
It's different after washing. The dirt on the lens surface is washed away, leaving the surface smooth. Then, use a clean lens cloth to absorb the water on the lens surface, and the lenses will be clean without being scratched.
Additionally, you can add a little dish soap when washing.
Dish soap is neutral and won't damage the lenses. However, you can't use hand soap... Either overly acidic or alkaline substances will damage the lenses!
(Cracking)
The water temperature is also very important! Just use tap water (cold water). Never use hot water, as hot water will damage the lenses instead. The coating is very sensitive to high temperatures. Never wash your glasses while taking a bath or washing your face.
By the way, here's a little common sense: Lenses are afraid of high temperatures! Afraid of high temperatures! Afraid of high temperatures!
Don't take them into the bathroom, don't take them into the sauna, and don't leave them under the windshield!
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