Your Swimsuit Is Dirtier Than You Think
You should rinse your swimsuit in fresh water after every single swim and give it a proper hand wash about once a week, or every three to four swims. Most people do neither. They peel the suit off, ball it up in a towel and leave it in a bag until the next swim. By then it is carrying pool water, chlorine, sweat, skin oils and sunscreen, and it has been sitting warm and damp for hours. Your swimsuit is the piece of clothing that sits closest to your skin for the longest stretch of wet time, and it is usually the one you clean the least.
What is actually on your swimsuit after a swim
A swimsuit leaves the pool soaked in whatever was in the water. That is not only chlorine. It is everything chlorine reacted with.
Chlorine and chloramines
Pool chlorine reacts with sweat, skin oils, lotions and everything else swimmers bring into the water. Those reactions create chloramines, and chloramines are where most of the sharp "pool smell" comes from. Public health agencies such as the CDC point out that a strong chlorine smell at a pool usually means more chloramines, not more clean chlorine. Your suit soaks up that water and carries it home.
Sweat, skin oils and sunscreen
You sweat in the water too, especially in a hard session or a warm pool. Add skin oils, body lotion, sunscreen and hair products, and the fabric holds a thin film of all of it. Rinsing removes some. It does not remove all of it.
Warm, damp and closed up
Then comes the part almost everyone skips over. A wet suit rolled in a towel or stuffed in a zip pocket stays warm and damp for hours. That is the environment where bacteria and odors build up in fabric. It is why a suit that smelled fine at the pool can smell sour by the time you unzip your bag the next morning.
How often should you wash your swimsuit?
Here is a simple rule that works for lap swimmers, swim parents, vacation swimmers and everyone in between.
- After every swim: rinse the suit in cool fresh water, inside and out, before it dries.
- Every 3 to 4 swims, or once a week: hand wash it in cool water with a mild, swimwear-safe cleanser.
- After the ocean or a hot tub: rinse right away and hand wash the same day if you can.
- Never: leave it wet and closed in a bag overnight.
Swimming every day? Treat the weekly hand wash as the minimum, not the goal. The more often a suit goes back into chlorinated water, the faster residue builds up.
Why most swimmers skip it
Nobody plans to neglect a swimsuit. The problem is timing. A hand wash takes 10 to 15 minutes, plus drying time, and you need it right when you are tired, hungry, rushing to work or herding kids to the car. So the suit goes in the bag, and the bag goes in the trunk.
The other common shortcut is tossing the suit in the washing machine with everything else. That feels like cleaning, but heat and agitation are hard on the stretch fibers that make a suit fit. We cover why in Stop Throwing Your Swimsuit in the Washing Machine.
The swim bag sniff test
Want to know if your suit is dirtier than you think? Open your swim bag the morning after a swim and take one breath. If it smells like the pool, sour or musty, the suit has been sitting in residue all night. That smell is the signal your routine has a gap between the pool and the wash.
Signs your swimsuit needs more care than it is getting:
- It smells like chlorine even after it dries.
- The fabric feels stiff or slightly slimy when you pick it up.
- The color looks dull or blotchy compared to when it was new.
- The straps or leg openings have lost their snap.
A routine that takes one minute at the pool
You do not need a laundry room at the pool. You need a routine short enough that you actually do it.
- Rinse: hold the suit under the pool shower in cool fresh water for 20 to 30 seconds, inside and out.
- Squeeze, do not wring: press the water out with your hands, roll it in a towel, or use the pool's suit dryer if there is one.
- Freshen: mist the suit before it goes in your bag.
- Bag it loose: keep it in a mesh or separate pocket so air can move, then hang it to dry as soon as you get home.
- Hand wash weekly: cool water, mild cleanser, gentle squeeze, lay flat or hang in the shade.
Where the Fresh & Clean Swimwear Spray fits
Step 3 is where TRIHARD's Fresh & Clean Swimwear Spray comes in, made for every swimmer and the swimsuits in their bag. After you rinse and squeeze, give the suit about 4 sprays, let it sit for about 30 seconds, and put it in your bag. It neutralizes pool and chlorine odor, so the morning-after sniff test stops being a gamble. It is not a wash. Think of it as the step between washes: rinse and spray after every swim, hand wash when you have time. Pass the swim bag sniff test.
Not sure if, or what you actually need?
Tell us how chlorine shows up in your life and we'll point you to the right fit.
Not sure you're actually affected?
Want the whole post-swim routine in one go? The Post-Swim Reset Kit pairs the spray with our Chlorine Removal Shampoo and Body Wash. The Head-to-Suit Kit adds the Chlorine Protection Conditioner: hair, skin and suit, sorted after every swim.
Your skin and hair carry the same pool
If your suit leaves the pool full of chlorine residue, so does your skin and hair. A shower with regular soap often leaves the smell behind. Our guide on how to get rid of chlorine smell on your skin and hair covers the other half of the routine, and the complete pre and post swim routine puts it all in one place.
Frequently Asked Questions
How often should you wash your swimsuit?
Rinse it in cool fresh water after every swim and hand wash it with a mild, swimwear-safe cleanser every 3 to 4 swims or once a week. After the ocean or a hot tub, rinse right away and hand wash the same day if you can.
Is it bad to wear a swimsuit twice without washing it?
Wearing it twice after a fresh-water rinse is common and fine for most people. Wearing it again straight from a closed, damp bag is not ideal. The suit keeps pool residue, sweat and odor in the fabric, and it goes right back against your skin.
Why does my swimsuit smell even after it dries?
Drying removes water, not residue. Chloramines, sweat and skin oils stay in the fabric, and a suit that sat damp in a closed bag for hours can develop a sour or musty smell on top of the pool smell.
Do I need to rinse my swimsuit if I only swam for a few minutes?
Yes. Even a short dip leaves pool water in the fabric. A 20 to 30 second rinse is enough to remove most of the loose chlorinated water before the suit goes in your bag.
Can a swimwear spray replace washing my suit?
No. A swimwear spray freshens the suit and neutralizes pool odor between washes. It does not remove sweat, oils or sunscreen the way a hand wash does. The best routine is rinse and spray after every swim, and hand wash when you have time.
