You can apply some soap or wax to the zipper of the jeans, pull it back and forth, so that the rust and wax shavings of the zipper fall off together, and then apply the wax and pull it back and forth to keep the jeans smooth. Just keep the general denim zipper head, ring buckle and the like dry. If there are slight rust marks, you can wipe it with a silver cloth (No matter how black the silver cloth is, don't wash it. As soon as the special coating on the outside is washed off, it will be useless. Jeans zippers are often used, so it is really difficult to rust. Golden locks are generally wiped with a silver cloth, but they really turn black. Just wipe them with a clean cotton cloth dipped in copper oil, and the silver zipper can also be wiped.