How to Wash a Swimsuit the Right Way, According to a Fabric Care Expert

A swimsuit that fits perfectly and makes you feel great is the unicorn of the wardrobe world. So whether your perfect suit is a designer splurge or a budget basic, it’s certainly worth protecting. And how you care for your swimwear can make all the difference in its longevity season after season.

Between chlorine, salt, sunscreen, and sun exposure, swimsuits can take on grim and damage quickly. Below, learn how to wash your swimsuits properly and avoid the common mistakes that can shorten the lifespan of your favorite summer gear.

Why You Should Always Properly Care for Swimwear

Throughout summer swims and sunbathing, swimsuits can sustain plenty of damage over the season, explains P&G fabric care specialist Kim Romine. “Chlorine is a strong oxidizer that can break down fibers over time, while salt dehydrates fabrics and sunscreen leaves behind greasy, stain-prone residue,” says Romine. This is precisely why rinsing promptly and using the right wash method matters so much.

At the same time, since swimwear material is typically more delicate, gentle cycles and cool water are similarly vital for the longevity of these garments. Follow your swimsuit's care label and the rules below for best results.

The Golden Rule: Rinse Immediately After Swimming

A quick rinse after your swimsuit's day in the sun is always crucial—even if you don't have time to wash it fully right away. “Avoid damaging swimwear by rinsing it right after swimming and removing it from direct sunlight,” instructs Romine. The sooner you rinse out chlorine, salt, and sunscreen, the better your chances of preserving the fabric and elasticity.

Use cool water to rinse the suit thoroughly and gently squeeze it dry.

Handwashing Is Great, but Machines Work, Too

Swimwear care labels often recommend handwashing, and that’s still the safest option. However, if your suit is labeled as machine washable, it's fine to opt for the more modern route, provided you take proper precautions.

"While handwashing is gentle, machine washing can also be safe if the garment is machine washable and you follow the care label instructions," confirms Romine. "A delicate cycle is sufficient with these types of garments."

If machine-washing, always use a mesh laundry bag, choose a gentle cycle, and wash in cold water to protect the fabric and shape.

Choose the Right Detergent

“Traditional detergents are still suitable for washing your swimsuits and athletic wear, as long as they are machine washable and you follow the care label instructions,” says Romine. That said, not all detergents are created equal.

Use an everyday detergent; Romine recommends Tide Original liquid. If your suit feels or smells especially dirty, you may need a slightly stronger option, such as a detergent with stain-lifting and deodorizing properties. Remember: Stick to gentle cycles and cold water.

Skip the Dryer

Heat is one of the fastest ways to ruin your swimwear. Avoid the dryer entirely and instead lay suits flat to dry indoors or in the shade. (Hanging can stretch out straps and elastic, and direct sunlight fades color quickly.)

Be patient; air drying preserves fit and fabric far better than any shortcut.

Be Consistent

The right routine can go a long way in extending the life of your swimwear. With quick rinses, the right detergent, and a gentle wash routine, you can keep your favorite suit looking and feeling great all summer long.