How to wash bikinis and swimsuits without damaging the fabric
Why does swimwear need special care?
Bikinis, swimsuits, and swimming trunks are designed for contact with water, sun, and movement. However, this doesn't mean they can be washed like any other piece of clothing.
After a day at the beach or pool, these fabrics accumulate salt, chlorine, sand, sunscreen and sweat. Even when the garment appears clean, some of these residues remain in the fibres and, over time, can affect the colour, elasticity and shape of the part.
Small errors, such as using hot water, wringing out the fabric, or leaving the garment damp for too long, can speed up wear and cause your bikini or swimsuit to lose its original fit.
In this article, Blue Lavandarias explains how to wash and care for beachwear simply, helping to preserve the fabric and prolong the durability of items.
How to wash bikinis, swimsuits and trunks after use
The way you treat your swimwear right after use can make a difference to its durability. Small precautions can help prevent premature wear, stains, and changes to the fabric's texture.
Rinse under cold water after the beach or pool
After wearing a bikini, swimsuit or shorts, it is best to rinse the garment in cold water as soon as possible. This rinse helps to remove some of the residues left on the fabric after contact with the sea, the pool or sunscreen.
Even when the garment appears clean, some of these residues remain present in the fibres. Over time, stains, odours, and loss of elasticity can occur.
This care does not replace a more thorough wash, but it prevents dirt from accumulating until you get home. Whenever possible, use cold or lukewarm water and avoid hot water, especially in items with elastane, linings, straps, or more delicate finishes.
💡 Blue TipIf sand gets trapped in the lining, seams, or elasticated areas, leave the garment in clean water for a few minutes before washing with detergent. This care helps to loosen debris without creating unnecessary friction on the fabric.
Choose hand wash
For most bikinis and swimsuits, Washing by hand remains the safest option. This method allows for better temperature control, reduced friction, and prevention of deformation during washing.
When hand washing, follow these steps:
- Fill a container with cold or lukewarm water, avoiding hot water, which can affect the fabric's elasticity.
- Add a small amount of mild detergent, suitable for delicate items. If you are unsure about which type of detergent to choose, A DECO Proteste explains the differences between each category and when to use each one..
- Immerse the piece and move it gently in the water for a minute or two, without rubbing or wringing the fabric.
- Rinse well until remove all detergent residue.
- To remove excess water, Wrap the item in a dry, clean towel., and press carefully, without twisting.
If you choose to use a machine, select a delicate programme with cold water and a gentle spin. Place the items inside a mesh laundry bag and avoid mixing them with heavy items, such as jeans and towels, which increase friction inside the drum.
💡 Blue TipAlways check the label before washing. Some bikinis or swimsuits with padding, underwires, or decorative applications have specific restrictions. The textile care symbols help you understand exactly what each item can tolerate.
How to dry and store without damaging the fabric?
After washing, Leave the swimwear to dry in the shade, in a well-ventilated spot.. The tumble dryer is not recommended, as excessive heat can affect elastic fibres and compromise the garment's fit.
Direct sunlight should also be avoided. Although it accelerates drying, it can cause fading, especially in bright colours and prints.
Whenever possible, Leave the bikini or swimsuit to dry flat.. Hanging the garment while it's still damp by the straps or elasticated areas can cause the weight of the water to stretch the fabric and alter its original shape.
Before storing, always confirm that the item is completely dry. Even small amounts of moisture can cause unpleasant odours, especially if the laundry is kept folded in drawers, boxes or bags.
While tidying, Avoid leaving items rolled up or compressed amongst other clothes. Store them folded carefully, in a dry, airy place away from direct light, to prevent deformation and dampness.
How to remove sunscreen stains from swimwear?
Sunscreen stains are common on bikinis and swimsuits, especially in areas where the product accumulates more easily, such as straps, linings and seams.
As many sunscreens have an oily base, these residues can easily adhere to the synthetic fibres used in these types of garments, such as polyamide, nylon or elastane.
In many cases, stains only become visible after the garment has dried, leaving yellowish, oily, or darker areas on the fabric. For this reason, when you notice a stain, it is important to treat the affected area before proceeding with a full wash.
Rinse the stained area with cold water and apply a small amount of mild detergent directly onto the fabric. Leave it to work for 15 to 30 minutes, without rubbing.
Avoid bleach, stain removers and harsh detergents or hot water, as they can damage the fibres and worsen the stain. When the sunscreen is still fresh, this care is usually enough to make it easier to remove during washing.
Frequently asked questions about washing bikinis and swimsuits
Is it necessary to wash a bikini or swimsuit after each use?
Yes. Even when the garment appears clean, fabric accumulates salt, chlorine, sweat, sand, and/or sunscreen. Rinsing and washing after use helps to preserve the garment's elasticity, colour, and durability.
Can I keep my bikini or swimsuit still damp in my beach bag?
For a short period, it usually doesn't pose a problem. Still, the most important thing is not to leave the garment wet and closed for many hours. As soon as possible, rinse the bikini in cold water and avoid leaving it crumpled in your bag or rolled up in your towel until the next day.
Can chlorine and seawater damage fabric?
Yes, especially when the residue remains on the part for a long time.
Chlorine is particularly aggressive towards elastane, as it weakens the fibres and speeds up the loss of elasticity. Salt, on the other hand, can have a similar abrasive effect when it dries onto the fabric without being rinsed out.
Can I soak the bikini for several hours?
It is not recommended. Leaving the garment to soak for too long can weaken the fibres, wear out the elastane, and cause colour transfer between fabrics.
Can I use normal detergent to wash bikinis?
Yes, as long as it is used in small quantities and does not contain whitening agents or anything too harsh.
Can I use fabric softener on swimwear?
It is not the most recommended. In garments with elastic fibres, fabric softener can leave residue on the fabric and compromise elasticity over time.
Did this article help?
Beachwear care starts immediately after use. Small habits, such as rinsing the garment after being at the beach or avoiding excessive heat when drying, can help reduce fabric wear and keep bikinis, swimsuits, and shorts in better condition over time.
If you are looking for a practical solution to simplify your routine and ensure your garments are treated with the right care, you can count on Professional laundry services at Blue Laundrettes in Faro.
To continue receiving useful advice on textile care, follow the upcoming Blue Tips and follow Blue Lavandarias on Instagram.