To provide a label which can improve the value of a product and give a forgery preventing effects, and to provide a method for producing a product to which the label is attached.

An inner decoration layer 1 has a pattern or characters printed on its surface and a plurality of close holes 10. A protective layer 2 is stuck to the surface of the inner decorative layer 1 and has a plurality of close holes 20. The label is arranged in a mold into which a product is injected and molded before molding the product, and after injecting and molding the product, the label is stuck integrally close to the surface of the product. Since various changes are generated on the outer surface of the product by partial metallic layers or decorations of the inner decoration layer 1 or the protective layer 2, the plastic product can not be forged simply.