How do you care for and dry your swim harem pants? (salt, chlorine, sand)
Aug
Caring for Your Swim Harem Pants: The 30-Second Method
Caring for a pair of swim harem pants involves three simple steps, to be done on the same day you go swimming. Rinse the garment with clean, cold water as soon as you get out of the water to remove salt, chlorine, and sand before they dry into the fibers. Never wring it out by twisting it: gently squeeze it between your hands or between two towels. Let it dry in the shade, either flat or on a wide hanger—never in direct sunlight or on a radiator.
Three rules sum up the rest: no dryer, no fabric softener, and no sealed plastic bags. Harem pants that are rinsed and dried properly will retain their color, opacity, and the elasticity of their waistband for several seasons. Details and special cases are provided below.
📋 Table of Contents
1. Salt, chlorine, sand: the three enemies of your harem pants
2. Rinsing: The Step That Makes All the Difference
3. How to Dry Your Swim Harem Pants Without Damaging Them
4. Machine Washing: When and How
5. Special Case: Harem Pants with Built-in Lycra
1. Salt, chlorine, sand: the three enemies of your harem pants
Swim harem pants hardly ever wear out from swimming itself. What damages them is what you leave in them to dry. Understanding how each factor contributes to damage helps explain why rinsing them immediately is non-negotiable.
Salt: It crystallizes in the fibers
After a swim in the ocean, the water evaporates but the salt remains. It forms tiny, hard crystals that get lodged between the fibers and act like sandpaper with every movement. The result after a few weeks: fabric that becomes rough, colors that fade, and an elastic waistband that loses its stretch. Salt is particularly harsh on elastic and seams.
Chlorine: It causes discoloration and weakens spandex
It is by far the most formidable enemy. Pool chlorine is an oxidizing agent: it directly attacks the dye pigments—which explains why swimsuits fade—and chemically breaks down the spandex fibers. A pair of Lycra leggings regularly exposed to chlorine without being rinsed will lose their shape in just one season. The longer the chlorine remains in contact with the fabric, the greater the damage—which is why rinsing is so important.
Sand: It wears things down from the inside
Sand gets into pockets, under the waistband, and between seams. Once dry, it constantly rubs against the fabric and eventually causes premature wear at stress points. Damp sand that gets trapped in a fold also promotes unpleasant odors.
💡 A tip from the Sarouel de Bain team
The most common mistake isn’t washing your swimsuit improperly; it’s rolling it up while it’s still wet in a towel or plastic bag to take it home, then forgetting about it until the next day. Within a few hours, in the dark and damp conditions, salt and chlorine break down the fabric, and odors set in. A 30-second rinse when you get home prevents all of that.
2. Rinsing: The Step That Makes All the Difference
If you were to take away just one thing from this article, it would be this: Rinsing with clean water alone is enough to extend the life of a pair of swim harem pants by several seasons. Here’s how to do it.
Rinse with cold water—never hot water. Hot water opens up the fibers, causes residue to stick, and speeds up fading. Cold or lukewarm water is more than enough to rinse out salt and chlorine. A beach shower or a campground faucet works perfectly well.
Turn the harem pants inside out and empty the pockets. Sand hides in the nooks and crannies. Turn the garment inside out, shake out the pockets, and run water through the waistband and along the seams. For a style with built-in Lycra, be sure to let the water circulate thoroughly between the outer fabric and the leggings.
Press, do not wring. Twisting the fabric breaks the fibers and permanently distorts the shape. Squeeze the harem pants between your palms, or roll them loosely in a dry towel while pressing down to absorb excess water.
Never let it soak for hours. A quick rinse is better than a long soak. Prolonged soaking—especially in detergent—softens the fibers and causes dark colors to bleed.
3. How to Dry Your Swim Harem Pants Without Damaging Them
Drying is the step where people make the most mistakes, often because they want to get it done quickly. However, swim harem pants are made of quick-drying polyester or microfiber: when laid out flat, they dry in less than an hour in good weather, without any help.
To Do
Dry in the shade, in a well-ventilated area. A shaded balcony, a well-ventilated room, or the back of a chair out of direct sunlight. Air circulation does the job much better than heat.
Lay it flat or hang it on a wide hanger. Drying flat is ideal because it doesn't put any strain on the seams. If using a hanger, choose a wide, thick one that won't leave marks on the waistband.
Unfold the garment completely. A crease that isn't properly smoothed out traps moisture for hours, and that's where odors develop. For Lycra harem pants, pull the leggings away from the outer fabric so that the two layers dry separately.
To be avoided at all costs
Full sun. UV rays break down the dye pigments. Just a few repeated hours of direct sunlight are enough to turn a deep black into a dull gray. This is the leading cause of a swimsuit’s aesthetic deterioration.
The dryer. The heat from the dryer irreversibly damages the spandex in the waistband and lining. No swim harem pants should be put in the dryer, regardless of their material.
The radiator, the towel warmer, and the hair dryer. The same principle applies: direct heat causes synthetic fibers to shrink and elastic bands to harden.
The closed beach bag. Storing damp harem pants in a plastic bag or a sealed pouch creates the perfect environment for mold and lingering odors. If you need to carry a wet swimsuit, use a mesh bag or a breathable cloth bag.
4. Machine Washing: When and How
Daily rinsing is no substitute for a proper wash, but washing should still be done only occasionally. Washing once every five to six uses, or at the end of your trip, is a good schedule. Washing too often wears out the fabric faster than the sea itself.
Hand washing is the best option
Fill a basin with cold water, add a small amount of mild laundry detergent or Marseille soap, let it soak for five to ten minutes at most, gently rub the sensitive areas by hand, then rinse thoroughly until all the suds are gone. Detergent residue stiffens the fabric and traps odors.
Machine washing, if you insist
This is possible on most models, provided you follow a few strict guidelines: use the delicate or light-weight cycle, set the temperature to 30 degrees maximum, set the spin cycle to the lowest setting or turn it off, place the harem pants in a laundry bag to protect the seams and waistband, and wash them with similar colors. Always check the care label on your garment before washing.
Products to Avoid
Avoid using fabric softener: it leaves a film on the technical fibers and negates the fabric’s quick-drying properties. The same goes for bleach and chlorine-based stain removers, which cause instant discoloration. A small amount of mild liquid detergent is all your harem pants need.
5. Special Case: Harem Pants with Built-in Lycra
Items featuring spandex leggings sewn into the inner lining require extra care, as spandex is the fiber most susceptible to damage from chlorine and heat.
Always rinse off after every time you go swimming, without exception. It is the lining, more than the outer fabric, that is damaged by chlorine.
Separate the two layers as they dry. Leggings that are fused to the outer fabric take twice as long to dry and trap moisture inside the garment.
Never iron the Lycra portion and avoid any contact with a heat source. Even a single exposure is enough to cause the fabric to permanently lose its elasticity.
If you're still undecided between the two types of cuts, or if you're wondering which one is best suited to your needs, our comparison guide explains everything: Swim harem pants with or without built-in Lycra—which should you choose?
6. Put away your harem pants for the winter
At the end of the season, a few minutes of care can prevent an unpleasant surprise the following June: a yellowed, stained, or musty-smelling swimsuit.
Wash it one last time before putting it away, to remove any traces of salt, chlorine, or sunscreen. Traces of sunscreen that aren't washed off can cause permanent yellow stains over time.
Make sure it is completely dry. Even the slightest bit of residual moisture left for several months will cause mold stains that are impossible to remove. If in doubt, let it dry for one more day.
Fold it loosely, or roll it up. A deep crease that remains for nine months will eventually leave a mark on the fabric. Rolling the fabric prevents this problem.
Store it away from light, in a dry, well-ventilated place. A cabinet shelf is ideal. Avoid airtight plastic containers and damp basements.
7. FAQs on Caring for Swim Harem Pants
Can you put swim harem pants in the washing machine?
Yes, for most models, provided you use a delicate cycle at a maximum of 30 degrees, without a spin cycle or with a minimal spin cycle, and place the garment in a laundry bag. However, hand-washing in cold water is still preferable, as it better preserves the colors and elasticity of the belt. Check the care label on your garment before machine washing.
How long does it take for a pair of swim harem pants to dry?
Between 30 minutes and 1 hour and 30 minutes, depending on the fabric, temperature, and ventilation. Unlined polyester or microfiber models dry the fastest. Harem pants with built-in Lycra take a little longer, especially if the two layers weren’t separated when hung to dry.
My swim harem pants smell musty—what should I do?
Soak it for thirty minutes in a basin of cold water with a glass of white vinegar added, which neutralizes odors without damaging the fibers. Then rinse thoroughly with clean water and let it air dry in the shade. That musty smell almost always comes from a swimsuit that was put away while still damp: the real solution is prevention.
How do you remove sand stuck in the seams?
First, let the harem pants dry completely: dry sand comes off much more easily than wet sand. Next, shake the garment vigorously while it’s inside out, then brush the seams and the waistband hem with a soft brush or an old toothbrush. Finish by rinsing with clean water.
Does chlorine really fade swimsuits?
Yes, that’s actually its main aesthetic drawback. Chlorine is an oxidizing agent that attacks dye pigments and gradually causes dark colors to fade to washed-out tones. It also breaks down elastic fibers. Rinsing with clean water immediately after each swim in the pool significantly reduces these effects.
Can you iron swim harem pants?
This is neither necessary nor recommended. Technical fabrics used for swimming hardly wrinkle at all and dry without leaving creases when laid out flat. However, an iron may burn the synthetic fibers and damage the spandex in the waistband or lining.
A well-cared-for pair of harem pants will last for years
Men's and children's swim harem pants, covering from the navel to the knees, opaque, and quick-drying. Shipping in France and internationally, available with purchases of €99 or more in mainland France.
Check out our swim harem pants