How to Keep Your Swimsuit Looking New All Season Long

Let's be honest: swimsuits take a beating. Between the chlorine in your local pool, the salt in the ocean, and hours of direct sun baking the fabric, your suit is up against a pretty relentless combination of forces. Most people don't realize just how quickly those elements degrade even high-quality swimwear — or how easy it is to slow that process down with the right habits.

Think of your swimsuit as an investment. A well-made suit that fits beautifully and makes you feel great is worth protecting. Here's everything you need to know to keep it looking and performing its best, straight from designers and care experts who deal with this stuff every day.

Understanding the Enemy: What's Actually Damaging Your Suit

Before you can protect your swimwear, it helps to understand what you're protecting it from.

Chlorine is probably the most aggressive offender. Pool water is treated with chlorine to kill bacteria, but that same chemical breaks down elastane (commonly known as spandex or Lycra) — the fiber responsible for your suit's stretch and shape retention. Over time, chlorine causes elastic fibers to weaken, which is why an older suit starts to sag or feel loose even when it hasn't changed sizes.

Saltwater is less immediately destructive than chlorine, but it's still corrosive. Salt crystals that dry on fabric create abrasion at the fiber level, and the natural minerals in seawater can dull colors and break down dye bonds over time.

UV exposure is the sneaky one. Sunlight fades color — that's just physics — but UV rays also degrade synthetic fibers at a molecular level. Sunscreen and tanning oils compound this, creating a chemical reaction with fabric that accelerates fading and can leave behind residue that's difficult to remove.

"Most swimwear damage is cumulative," says textile designer and swimwear developer Renata Cruz, who has spent over a decade working with performance swim fabrics. "People don't notice it happening until the suit is already compromised. Prevention is so much easier than recovery."

The First Rule: Rinse Immediately

This is non-negotiable. Whether you've been in a pool or the ocean, rinse your suit in cool, clean water as soon as possible after you get out. This single habit does more to extend the life of your swimwear than anything else.

Rinsing removes chlorine, salt, and sunscreen before they have time to set into the fabric. Don't wait until you get home. Most beach clubs and pools have outdoor showers — use them. If you're somewhere without a rinse station, even pouring a water bottle over your suit helps.

Temperature matters here: always use cool or lukewarm water. Hot water opens up fabric fibers and makes them more susceptible to damage and color loss.

Washing: Hand Wash Is Always the Right Answer

Machine washing swimwear is one of the fastest ways to destroy it. The agitation in a washing machine — even on a delicate cycle — stretches and stresses elastic fibers in ways they're not designed to handle. The spin cycle is particularly brutal.

Hand washing is straightforward and takes about two minutes:

1. Fill a sink or basin with cool water.
2. Add a small amount of a gentle, swimwear-specific detergent or a pH-neutral soap. Brands like Sink the Pink and Eucalan make products specifically formulated for swimwear.
3. Gently swish the suit in the water and softly squeeze the fabric — don't scrub or wring.
4. Rinse thoroughly until no soap remains.
5. Gently press (don't twist) excess water out by rolling the suit in a clean towel.

For suits with underwire or structured cups, support those elements as you wash to prevent warping.

Drying: Skip the Dryer, Skip the Direct Sun

This surprises a lot of people: you should not dry your swimsuit in direct sunlight. Laying it flat on a towel in the shade is the ideal method. UV exposure while the fabric is wet accelerates color fading dramatically — the water acts almost like a magnifier for UV rays.

The dryer is completely off-limits. Heat degrades elastane faster than almost anything else, and the tumbling action causes additional mechanical stress on seams and fabric. Even a single dryer cycle can noticeably affect a suit's fit and shape retention.

Never hang a wet swimsuit by the straps to dry. The weight of the water pulling on the straps will stretch them out of shape. Always lay it flat.

Fabric-Specific Care: Not All Suits Are the Same

Different materials have different vulnerabilities:

• Nylon/elastane blends: The most common swimwear construction. Highly sensitive to chlorine; benefit most from immediate rinsing and gentle washing.
• Polyester/elastane blends: More chlorine-resistant than nylon, which is why competitive swimmers often prefer them. Still susceptible to UV fading and heat damage.
• Recycled fabrics (like ECONYL): Generally durable and environmentally responsible, but should still be hand washed. Some recycled fabrics can be slightly more prone to pilling — turn them inside out when washing to minimize friction.
• Textured or embellished suits: Suits with ruching, hardware, or embellishments need extra care. Wash inside out, and store flat to prevent hardware from snagging on other items.

The Rotation Rule

If you swim or hit the beach regularly, rotating between at least two suits is genuinely one of the most effective longevity strategies. Swimwear elastic needs time to recover its shape between wears — wearing the same suit every day without a recovery period permanently stretches out the fibers faster.

Think of it like shoes. You wouldn't wear the same pair of sneakers seven days a week and expect them to hold up. Your swimwear is the same.

Storing Your Suits the Right Way

Off-season storage matters more than most people think. Store swimwear flat or loosely folded in a cool, dry drawer — not in a plastic bin where moisture can get trapped. Keep suits away from rough fabrics that could cause pilling.

Never store a suit while it's still damp. Even slightly damp fabric in a closed space can develop mildew, which is nearly impossible to remove without damaging the material.

When It's Time to Let Go

Even the most well-cared-for swimsuit has a lifespan. Here are the honest signs that it's time to retire a suit:

• The elastic is gone. If the suit doesn't spring back when you stretch it, or if it sags in the seat or cups, the elastane is compromised and no amount of care will restore it.
• The fabric has become see-through. Thinning fabric, especially in the seat, is a sign of significant fiber breakdown.
• The color has faded unevenly. Patchy fading means the dye bond has been compromised at certain stress points.
• Seams are fraying or separating. Structural integrity is gone at that point.

A suit that's reached this stage isn't serving you anymore — and frankly, you deserve better. Letting go of a worn-out suit is an invitation to find a new one that fits and feels exactly right.

The Bigger Picture: Swimwear as Investment Dressing

The fast fashion approach to swimwear — buying cheap, replacing often — actually costs more in the long run and generates a significant amount of textile waste. A quality swimsuit, properly cared for, can realistically last two to four seasons of regular wear. That's real value.

At Zazi Swim, we believe your swimwear should be something you reach for with excitement, not something you're replacing every few months. Treat your suit well, and it'll show up for you — all summer long.