Fix a Wallpaper Seam
Restore Free Flow to a Faucet
To remove the sand and other deposits, soak the aerator in vinegar, then scrub it with a toothbrush. This usually solves the problem. If you have to disassemble the aerator to clean it, lay out the parts in the order you removed them so you can reassemble them correctly. Still having issues? Do a showerhead deep clean.