Swimwear Care: How to Make Your Swimsuit Last More Than One Season

Quick answer

Rinse your swimsuit in cool fresh water immediately after every swim, wash it gently with a mild detergent, and dry it flat in the shade. Avoid hot water, harsh chemicals, wringing, and direct sunlight. These habits remove chlorine and salt before they break down fibers, which is the single biggest thing you can do to make a swimsuit last longer.

A swimsuit shouldn't be a one-season purchase. The difference between a suit that sags and fades by August and one that still fits next summer usually comes down to a few small habits. Chlorine, salt, sunscreen, and body oils all cling to the fabric and quietly weaken it. If you handle them right after each swim, you remove the main causes of stretch loss and color fade.

This guide walks through the exact steps to care for swimwear at home, with checkpoints for the mistakes that cause most premature wear. The same routine works for any swimsuit, whether it's a lined bikini bottom or a one-piece.

Why swimwear breaks down faster than other clothes

Swimwear is made from elastic fibers like Lycra or spandex that give it stretch and recovery. Chlorine, salt, heat, and sunscreen chemicals attack those fibers. Over time the fabric loses its snap, becomes thin, or pills. Sunscreen and body oils are especially sneaky because they can leave a residue that holds chlorine against the fabric even after the pool.

The fix isn't complicated: remove the attackers quickly and gently. Most damage happens in the first few hours after a swim, not in the water itself. A two-minute rinse right after you get out does more than any specialty wash later.

• Chlorine and salt are the main causes of fiber breakdown; rinse them off before they dry.
• Sunscreen and lotions can trap chlorine against the fabric; rinse thoroughly, especially under straps and linings.

Step 1: Rinse immediately after every swim

As soon as you can, rinse your swimsuit in cool fresh water. This flushes out chlorine, salt, and most sunscreen residue before they can set. If you're at a public pool, a quick rinse in the shower works. If you're at the beach, a rinse in a sink or even a bottle of fresh water poured over the suit helps.

The common mistake is waiting until you get home. A suit left damp in a bag for hours gives chlorine and oils time to work into the fibers. If you can't rinse right away, at least wrap the suit in a dry towel and rinse as soon as possible.

• Use cool water, not hot; heat can weaken elastic fibers.
• Rinse the inside of the suit as well as the outside, especially the lining.

Step 2: Wash gently with the right soap

After a few wears, or if the suit smells like chlorine, give it a gentle wash. Use a mild liquid detergent or a dedicated swimwear wash. Avoid harsh detergents, fabric softeners, and bleach. Fill a sink with cool water, add a tiny amount of soap, and gently squeeze the suit through the water. Don't scrub or twist.

If you're washing a lined bikini bottom, pay attention to the lining. Dirt and oils can hide there. Squeeze the water through the fabric a few times, then rinse until the water runs clear. For chlorine swimwear care, a rinse after every swim is usually enough; a full wash once a week or after heavy use is plenty.

• Never use fabric softener; it coats fibers and reduces stretch.
• If the care label says hand wash, follow it; if it says machine wash, use a mesh bag and a gentle cycle.

Step 3: Dry flat in the shade

Lay your swimsuit flat on a clean towel to dry, away from direct sun. Sunlight fades colors and breaks down elastic over time. If you must hang it, hang it by the straps or lay it over a drying rack; never hang it by the bottom edge, which can stretch it out. Avoid wringing or twisting to remove water; instead, press the suit between two towels to absorb excess moisture.

The biggest drying mistake is putting a wet swimsuit in a hot dryer. Even on low heat, the dryer can shrink or warp the fit. Also avoid drying on a radiator or in a hot car. Good swimwear drying tips are simple: cool, shaded, and flat.

• Never put swimwear in a dryer; heat damages elasticity.
• If you're in a hurry, roll the suit in a dry towel and press, then lay flat.

Step 4: Store it properly

Once your swimsuit is completely dry, store it flat or folded in a drawer. Don't leave it in a damp towel or a plastic bag. If you're packing for a trip, put it in a breathable pouch or between other clothes. Avoid storing it in direct sunlight or in a hot car for long periods.

A common mistake is storing a slightly damp suit. Even a little moisture can cause mildew and weaken fibers. If you're not sure it's dry, give it another hour in the shade.

• Make sure the suit is bone dry before storing.
• Rotate between two swimsuits if you swim often; giving each suit a rest day helps elastic recover.

How to handle sunscreen and pool chemicals

Sunscreen is necessary, but it can stain and degrade swimwear. Choose a water-resistant formula and apply it before you put on your suit, so it has time to absorb. If you reapply at the pool, try to avoid spraying directly on the suit. After swimming, rinse thoroughly to remove both chlorine and sunscreen.

If your pool uses a lot of chlorine, consider a quick rinse in the shower before you even leave the pool area. That first rinse removes the bulk of the chemicals. For saltwater, the same logic applies: rinse off the salt before it dries and crystallizes in the fabric.

• Apply sunscreen before dressing, not after.
• Rinse immediately after every swim, even if you plan to swim again later.

Your 5-step swimwear care routine

1. Rinse immediately after every swim: Use cool fresh water to flush out chlorine, salt, and sunscreen. Do this before the suit dries. Checkpoint: if you can smell chlorine, rinse again.
2. Wash gently with mild soap: Hand wash in cool water with a tiny amount of mild detergent. Squeeze gently; never scrub or twist. Checkpoint: skip fabric softener and bleach entirely.
3. Rinse until water runs clear: Rinse the suit thoroughly to remove all soap residue, which can attract dirt and irritate skin. Checkpoint: no slippery feel left on the fabric.
4. Dry flat in the shade: Lay the suit flat on a towel away from direct sun. Press out excess water with a towel instead of wringing. Checkpoint: never use a dryer or hang by the bottom edge.
5. Store only when completely dry: Once dry, fold and store in a drawer. Avoid plastic bags and damp towels. Checkpoint: if it feels cool or damp, let it air longer.

Swimwear built to handle repeat wear

• Last Chance Swim Bikini Bottom - Taupe: Made from 78% recycled nylon and 22% Lycra, with a self-lined design for support and moderate coverage. Lycra gives the stretch and recovery that chlorine and heat can damage. Rinsing and gentle washing help this bikini bottom keep its shape and coverage season after season.
• The Basics Mid Rise Brief - White: Made with Lenzing TENCEL Modal, a sustainably sourced, responsibly produced fiber that is soft and breathable. While not a swimsuit, this brief shows the kind of gentle care that keeps delicate fibers soft. The same mild-detergent, no-dryer approach works for any stretch fabric you want to last.

Caring for swimwear is mostly about speed and gentleness: rinse right away, wash with mild soap, and dry in the shade. Those habits protect the elastic fibers that give your suit its fit. Do them consistently and you'll get more than one season out of every swimsuit you own.