The best mildew-resistant shower curtain liners are made from waterproof, non-toxic PEVA (polyethylene vinyl acetate) or treated heavy-duty vinyl. Top models feature reinforced mesh headers to prevent tearing, weighted bottom magnets to stop clinging, and antimicrobial treatments to actively inhibit mold growth.
To effectively prevent mold and mildew, choose a shower liner made of non-porous PEVA (Polyethylene Vinyl Acetate) or EVA (Ethylene Vinyl Acetate) rather than traditional PVC vinyl. These materials are naturally resistant to water and bacteria and are completely odorless. Look for liners featuring antimicrobial treatments (like Microban) to actively inhibit mold growth.
The healthiest shower curtain liners are made from either 100% natural, organic fabrics (like cotton or hemp) or PVC-free, non-chlorinated synthetic plastics (like PEVA or EVA). These options avoid the VOCs, phthalates, and off-gassing associated with traditional vinyl (PVC) curtains.
Over time, constant exposure to water and humidity can lead to mold or mildew developing along the bottom edge of the liner, especially in spaces where ventilation is limited or the curtain stays damp after each shower. Luckily, cleaning a shower curtain or its liner isn't as complicated as you might imagine.
For a truly mold-resistant shower, the best options are non-porous materials like solid surface, acrylic, or porcelain. These do not absorb moisture or provide the crevices mold needs to grow. Unlike traditional tile, seamless shower panels eliminate grout lines, which are the #1 source of mold and mildew.
Characteristics of effective anti-mould materials
Materials like metal and plastic are used because of their natural resistance to mould. A good resistance to humidity is another valuable factor for these materials. The more resistant the material, the less likely mould will form on its surface.
The Japanese practice of hanging futons and pillows outside to “air out” isn't just traditional — it kills mold and mites that love humid bedding. Wipe down bathrooms after every use. Exhaust fans during showers, wipe tiles and mirrors, keep surfaces dry. Bathrooms are ground zero for household mold.
Getting mold off a washable shower curtain (or plastic liner) is easy with the right laundry setup. For most machine-washable curtains, you will need to run a hot cycle with laundry detergent, 12one-half12 cup of baking soda, 12one-half12 cup of oxygen bleach (for colors) or chlorine bleach (for whites), and 1 cup of white vinegar in the rinse cycle.
Mold exposure typically causes allergy-like symptoms. The best way to know if mold is making you sick is by observing where and when your symptoms occur. If you consistently feel unwell indoors (especially after a water leak) and your symptoms improve when you leave the home, mold is likely the trigger.
Ashley is also the co-founder of The Lazy Travelers blog. Shower liners should be replaced regularly every six to 12 months. Replace your shower liner if it holds soap scum or mold, smells odd, has tears, or a different texture than it came with.
Check your shower curtain liner! Avoid 'PVC' or 'Vinyl' liners as they release toxins known to be harmful to your health. Instead, choose a liner made up of fabric such as cotton or polyester.
If you already have a shower curtain you love, you can buy a natural linen or hemp fabric liner to replace PVC or plastic versions. Just make sure it's not treated with antimicrobial or water-resistant chemicals.
PEVA is a non-toxic plastic that is entirely waterproof, inexpensive, and easily wiped down, making it the best choice for a highly functional, low-maintenance liner. Fabric liners are machine-washable and aesthetically pleasing, but require regular washing and drying to avoid mold and mildew.
For the absolute least toxic shower curtain, skip vinyl or PVC and choose natural fabrics like GOTS-certified organic cotton or hemp. For a waterproof option, choose EVA (Ethylene Vinyl Acetate) or PEVA (Polyethylene Vinyl Acetate), which are free of chlorine and phthalates.
Synthetic fabrics like polyester, acrylic, olefin (polypropylene), and nylon are naturally mold and mildew resistant. Because they are hydrophobic (water-repelling), they do not absorb moisture like natural fibers do, making it much harder for mold spores to take hold.
Additionally, spraying a solution of equal parts vinegar and water or a diluted hydrogen peroxide solution into the air can help to kill airborne mold spores.
The most effective way to address mold exposure is to completely remove yourself from the source and allow your body’s natural elimination pathways (liver, kidneys, and bowels) to flush out mycotoxins.
How quickly mold affects you depends primarily on your individual sensitivity.
Shower liners are highly prone to mold because they provide the ideal breeding ground: high humidity, warm temperatures, and an abundant food source. When wet, soap scum, body oils, and skin cells collect on the plastic. If the liner is bunched up, folds and wrinkles trap moisture and prevent the curtain from drying completely.
Vinegar is the better choice for killing mold. While bleach removes surface stains, its chemical structure prevents it from penetrating porous surfaces like wood and drywall, leaving the roots intact. Vinegar penetrates these materials, killing mold at its roots.
You don't necessarily need to change out plastic shower curtains or liners when they become grimy. As we've discussed, OxiClean™ bathroom cleaners can help you remove soap scum, or stains from hard water or mold and mildew.
Mold is generally at its worst from early spring through early fall (specifically July through October), peaking during the warmest and most humid months. Mold thrives in warm temperatures (60∘F to 80∘F) combined with relative humidity levels above 60%.
In A Nutshell: Misconceptions About Mold
Your home can be 100% mold-free: No, there are always mold spores in the air. Anyone can effectively remove mold: No, you need professional services for that.
Yes, spraying undiluted white vinegar is an effective, natural way to prevent mold growth in your shower. Its acidity disrupts the cell structure of most mold species, stopping them from anchoring to surfaces and spreading.