YKK zipper imported waterproof zipper

Nowadays, most clothes will have metal zippers, but some zippers will be very difficult to pull, which has worried many people. In fact, you don't have to worry too much. Let's take a look at the solutions shared by Xiaobian and you.
1. Pull the tail part of the zipper, straighten it, and then pull it from bottom to top to see if it is smooth. If it is not smooth, you can find a wax and apply it on the zipper surface. This wax can be obtained from the outer coating of some drugs. Of course, candles can also be used. Wipe it back and forth on the zipper.
2. If there is no wax, you can use a few drops of Sewing Machine Oil. Don't look for the oil. The oil is too black and dirty. It will be clean and smooth.
3. You can sew a wind discipline buckle at the place of the zipper, which can hook the square hole at the top of the zipper, so as to make the zipper move freely.
4. If the method doesn't work, you can replace the end of the zipper and replace it with a better metal zipper, which will be free again soon. It's really not possible. You can replace them all with new ones.