How to Clean Shower Curtain Liner? | Washed, Sprayed, Hung Dry

A grimy shower curtain liner is easy to put off until mildew spots take over. The good news: plastic or vinyl liners clean up fast with a washing machine or spray bottle, and the job takes under an hour. Here’s what works, what damages the liner, and how to keep it fresh longer.

Machine-Washing a Plastic or Vinyl Liner

Most plastic and vinyl liners are machine washable, but settings matter more than detergent. Whirlpool recommends warm or cool water on a gentle cycle with high water levels, then hanging the liner back up to dry. Remove the liner from the rod first, and check the machine can handle it without bunching. The standard recipe:

• Set the washer to a gentle or delicate cycle with cold or cool water
• Add about 1 tablespoon of detergent — no full scoop needed
• Throw in 1 or 2 clean white towels to add agitation and scrub the liner as it tumbles
• Run the cycle, then hang the liner immediately to air dry

When it comes out dripping wet, hang it right back on the shower rod — never leave it in the machine or put plastic in the dryer, as heat can warp, melt, or shrink it permanently.

Spraying With Vinegar or Bleach

For a spot treatment, skip the machine. Spray-clean with 1 part distilled white vinegar to 4 parts warm water, cover the whole liner, let it sit up to 15 minutes, scrub stubborn spots with a soft brush, rinse with warm water, and air-dry fully.

For heavy mildew, Wirecutter’s tested routine uses a bleach-based pretreatment: mix 2 cups water with 2 teaspoons of bleach, apply to affected areas, let sit about 10 minutes, then wash on a cold delicate cycle with 1 tablespoon of detergent. Use bleach only if the liner label allows it.

A hand-wash option: fill a tub with cool water and 1 tablespoon of dish soap, soak the liner for 30 minutes, scrub with a soft brush, rinse, and hang to dry.

How Often Should You Clean?

Clean a liner about monthly, or every 1–3 months depending on bathroom humidity and usage. A family bathroom used twice daily needs more frequent cleaning than a light-use guest bath.

Between cleanings, pull the liner closed after every shower and leave the door or window open so it dries fast — mildew needs moisture to grow. Wait until the liner is completely dry before reinstalling the decorative curtain;

When washing won’t fix it, replace it. Clear liners are inexpensive, and you can see options at our roundup of the best clear shower curtain liners.

Common Mistakes That Ruin Liners

Three errors cause most failures: running plastic through the dryer (heat distorts and melts), washing on hot water (warps vinyl), and overloading the washer or skipping towels (leaves folds uncleaned).

Fabric liners are the exception — they tolerate warmer water, and some can go in a low-heat dryer if the label allows. Still, air-drying is always safe for any material.

For stubborn soap scum, wash with 1–2 white towels, add 1/2 cup baking soda with gentle detergent, run a warm cycle, and hang dry. For deeper grime, add 1 cup vinegar before the rinse cycle.