10. Stopping a zip from opening Long-term use of a zip may cause it to become slack and begin to unzip. You can use hairspray or colourless nail paint on it to stop this from happening. Post navigation 8 Life Hacks That Can Save Your Car From Theft 10 Unobvious Things to Do as Soon as You Enter Your Hotel Room 1 2 3 4 5 6 7 8 9 10 11