I purchased this from Majimaya Kashi Doguten last year. I've used it about 5 times in total, washing it with water only at the beginning and end, and wiping it dry with a release spray in between. I've taken good care of it, so I don't think there's any damage to the surface other than the original scratches. There is some burning and scuffing on the back of the mold. I think the burnt areas could be removed by scrubbing, but I left them as they were because I didn't want to scratch it. I will clean the grooves as much as possible with a toothpick before sending it, but please understand that there may be some remaining dirt or flour. Please refer to the following web information. ______________________________ {Product Specifications} Material: Steel with silicone coating Pre-baking: Not required Inner dimensions (approx.): 79 x 53 x 29mm Outer dimensions (approx.): 300 x 218mm Made in Japan {Notes Before Purchase} [About the manufacturing process (pressing process) and silicone coating of metal molds] Metal molds inevitably have machine scratches and scuffs due to the force used to press and bend the molds during the molding process. Silicone coating is a resin coating applied at high temperatures, so these machine scratches and scuffs will be penetrated. The lines and patterns visible on the mold are a result of this process. The roughness of the surface is also due to scratches from the manufacturing process of the mold and does not affect the release effect of the silicone coating, so please rest assured. Also, we cannot accept returns or cancellations for these reasons. {Product Description} [About Bronze Steel Silicone] It is a bronze color close to gold, giving a luxurious feel that replaces gold. This color is not paint but is achieved through heat treatment, so it will not transfer to the baked goods. It uses pure steel with a surface finish that allows silicone to adhere well, and the silicone is applied thickly, so the silicone coating lasts a long time.