lens:

We recommend cleaning the lenses with the microfiber cloth included in the package upon purchase.
Scratches may appear if you wipe with clothes or a soft cloth.
There is no problem even if you clean the lens with chemicals or alcohol.
However, we recommend wiping with water.

Frame (glasses frame):

Acetate and celluloid-based products stretch and contract under human heat. Therefore, the shape of the glasses may change as you wear them. This is a natural characteristic of the material.