Handwash in warm water with a mild detergent or soap, be sure to rinse thoroughly and dry naturally.
The imperfections found in the metallic paper are not defects but characteristics of the uniqueness of the paper itself, which do not affect the durability of the product.
It is normal for the metallic paper to bend and mark with use; the intention is for the paper to take on a more lived-in, 'vintage look'. This is a characteristic of metallic paper; it is not a defect but a feature that makes the product unique.

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