Quick answer
Rinse your swim shorts in cold fresh water immediately after every swim to remove chlorine and salt, then wash them on a gentle cycle with mild detergent and no fabric softener. Air-dry them flat or hanging in the shade, never in direct sun or a hot dryer, to protect both the color and the elastic fit.
Why the first 30 minutes after a swim matter most
Chlorine and saltwater are the two biggest threats to swimwear fabric. They break down elastane fibers over time, which is what causes swim shorts to lose their close fit and start sagging. A quick rinse within half an hour of leaving the water removes most of the residue before it can settle into the fibers. If you are at a beach or pool with no fresh water nearby, a bottle of drinking water poured over the shorts works as a temporary measure until you can rinse properly.
Hand wash or machine wash: what actually works
Hand washing is the safest option for any swim short with a printed design or a close-fitting cut, because you control the agitation and temperature. If you prefer a machine, use a mesh laundry bag, choose a cold water gentle cycle, and skip the spin cycle if your machine allows it. The agitation of a normal cycle is what pulls prints and distorts the stretch fabric. Hot water is the other common mistake: it sets stains and weakens elastic, so keep everything cold.
Detergent, softener, and what to avoid
Use a small amount of mild liquid detergent. Powder detergents can leave residue in the dense weave of swim fabric, and fabric softener coats the fibers with a waxy film that reduces stretch and can dull colors. Bleach is never appropriate for swimwear, even on white shorts, because it attacks the elastane. If your shorts have a woven label or a lined interior, turn them inside out before washing to protect those details.
Drying without wrecking the fit
Lay swim shorts flat on a towel or hang them in a shaded, well-ventilated spot. Direct sunlight fades prints and weakens elastic over time, and a tumble dryer is worse: heat shrinks the fabric and destroys the stretch that gives swim shorts their close fit. If you need them dry quickly, roll them in a dry towel and press gently to remove excess water before hanging. Never wring or twist them, which distorts the cut.
How often to wash and how to store between wears
Rinse after every swim, but a full wash is only needed every few wears unless the shorts are visibly soiled or heavily chlorinated. Between wears, let them dry completely before folding them away. Storing damp swimwear in a bag or drawer encourages mildew and odor, which is hard to remove without harsh treatment. A breathable mesh bag or a loose drawer space keeps them fresh.
Step-by-step swim shorts washing routine
- Rinse immediately after every swim: Use cold fresh water to remove chlorine, salt, and sunscreen residue. If you are still at the pool or beach, rinse in a shower or pour bottled water over the shorts. Checkpoint: the water should run clear, not slippery or foamy.
- Pre-treat any stains before washing: Dab a small amount of mild liquid detergent directly onto stains and let it sit for five minutes. Do not rub aggressively, which can spread the stain or pill the fabric. Common mistake: using hot water on stains, which sets them permanently.
- Wash cold and gentle: Hand wash in a sink, or use a mesh bag on a cold gentle cycle. Use a small amount of mild detergent and no fabric softener or bleach. Checkpoint: if you see suds after rinsing, you used too much detergent.
- Remove excess water without wringing: Lay the shorts flat on a clean towel, roll the towel up, and press gently. Never twist or wring the shorts, which distorts the cut and stretches the elastic. Common mistake: wringing out swim shorts like a towel, which shortens their life.
- Air-dry in the shade: Hang or lay flat in a shaded, ventilated area. Avoid direct sunlight and never use a tumble dryer, which fades prints and destroys stretch. Checkpoint: the shorts should feel dry to the touch before you fold them.
- Store dry and loose: Once completely dry, store them flat or hanging in a drawer or breathable bag. Do not store damp swimwear, which leads to mildew and odor. Next step: rotate between two pairs so each has time to dry fully between wears.
Swim shorts care by fabric and cut
- Taormina Swim Shorts | Green Print 403178-P126: The Taormina Swim Shorts have a close-fitting cut that hugs the body without compressing it, and they are designed to minimize drag in the water. A close fit depends on elastic fibers staying intact, so rinsing chlorine and salt promptly and avoiding hot water or dryer heat protects the precise fit you bought them for.
- Etna Swim Shorts | Navy Print 403181-P0RA: The Etna Swim Shorts have a short length on the thigh and a woven HOM label on the back. The woven label can snag or fade if you wash with rough items or apply direct heat, so turn them inside out and air-dry to keep the finish neat.
- Lobster Swim Shorts | Navy/White 401246-PN07: The Lobster Swim Shorts are lycra swim boxer briefs with an elastic at the bottom of the legs that firmly maintains the trunks on the thighs. Elastic leg bands are especially vulnerable to heat and fabric softener, so cold washing and air-drying are essential to keep that grip working.
