Be careful of the proper close when using. Open and close the zipper in its full length. If the slider is on its half way, the tooth can harm.
Bring the two sides as close as possible when closing to make the way of the slider easier. The closing parts will not harm or tear.
Close the zipper when washing and avoid hard chemicals.
Choose the right temperature when ironing. Close the zipper and use a piece of textile.
If the zipper doesn’t work properly after washing and ironing, use a piece of soap or some kind of paraffin candle to handle the pieces and pull the zipper up and down for a while.