Which Way Does The Shower Curtain Liner Face . The bernoulli principle says that as fluid speeds up, pressure drops. Wet the shower curtain liner so it sticks against the tub. Veronica Hughes How to hang double shower curtains (for less!) from veronicahughes34.blogspot.com Which way does the shower liner go? After you have the rod completely secured and the curtain has been stuck to the rod, it is time to turn off the water. Some liners have magnets that will stick to your tub but so many showers/tubs are now plastic so these do not work.