There comes a time in every shower rod's life when it begins to show signs of wear and tear. Maybe there are a few specks of rust, or maybe the plastic coating is beginning to come off. Slowly but surely, the shower curtain no longer moves as smoothly as it once did and now starts to make a ghastly screeching noise when it is pulled open and closed. This can be rather annoying.
To breathe some life back into the shower curtain, just add a thin layer of petroleum jelly along the top of the shower rod. This will make the curtain glide open and closed.