How to Wash Activewear: 8 Tips to Stop Pilling, Fading and Stretching

You spent good money on your gym gear. The last thing you want is for it to go flat, pilled, or stretched out after ten washes.

The thing is, most activewear doesn't wear out from use. It breaks down from how it's washed. Performance fabrics like nylon, spandex, and polyester blends are built to move with your body, wick sweat, and hold their shape through hard sessions. But they're also sensitive to heat, harsh chemicals, and the wrong wash routine.

The good news is a few small changes to how you do laundry will make a real difference.

Common Mistakes That Kill Activewear Early

Before getting into what to do, here's what most people get wrong:

  • Washing in hot water. The fastest way to break down elastic fibres and fade colours.
  • Using fabric softener. Coats synthetic fibres with residue that traps bacteria and kills stretch over time.
  • Leaving sweaty clothes sitting. Even a few hours in a hamper or gym bag speeds up odour and degrades fabric.
  • Tumble drying on high heat. Destroys waistbands, reduces stretch, and warps shape.
  • Hanging leggings and sports bras to store. Stretches out waistbands and straps over weeks.

Use Powder Detergent, Skip the Softener

Liquid detergents and fabric softeners seem gentle, but they leave residue on synthetic fibres that traps odour over time and breaks down the stretch. Powder detergent cleans more thoroughly without coating the fabric.

Bleach is a hard no. Even a small amount degrades spandex fibres and causes colours to fade unevenly.

Cold Water, Every Time

Hot water is the fastest way to kill activewear. It breaks down elastic fibres, causes colours to bleed, and makes fabrics lose their structure. Cold water does the opposite: it locks in colour, protects the fibres, and keeps your leggings and tops holding their shape wash after wash.

Full cycle is fine. Hand-washing sounds gentle but it's too inconsistent and easy to get wrong.

Use a Laundry Net

This one step makes a noticeable difference. Tossing your activewear loose in the drum means constant friction against zippers, velcro, and other rough fabrics. That friction causes pilling, snags, and colour wear.

Put each piece in its own laundry net and turn it inside out before closing the bag. This protects the outer surface and keeps the print and colour looking newer for longer.

Also wash lights and darks separately. Colour transfer is real, especially on the first few washes.

New Piece? Wash It First

Before wearing anything new, give it a cold wash on its own. This rinses out any residual dye from production and preps the fabric. It takes two minutes and saves you from a dye transfer situation you don't want.

Don't Leave It Sitting Wet

Once the wash is done, get it out. Leaving wet activewear sitting in the drum or soaking in water speeds up odour buildup and can cause colour to bleed onto itself. Wash it and move it straight to drying.

Dealing with Odour That Won't Go Away

If your activewear still smells after washing, the fibres have built-up residue from detergent or fabric softener trapping bacteria. Fix it with a white vinegar soak before the next wash.

Fill a basin with cold water, add half a cup of white vinegar, and soak the piece for 30 minutes. Then run it through a normal cold machine wash with powder detergent. No vinegar smell will remain after washing. Do this once every couple of months as maintenance, or whenever odour becomes noticeable.

Air-Dry vs Tumble Dry

Air-Dry Tumble Dry (Low Heat)
Fabric lifespan Best Acceptable
Shape retention Best Acceptable
Waistband integrity Best Acceptable
Time Slower Faster
Energy use None Moderate
High heat N/A Never. Ruins stretch and shape permanently.

Air-dry whenever you can. Lay flat or hang in a ventilated spot. If you need the dryer, low heat only and take pieces out while slightly damp to finish air-drying.

How You Store It Matters Too

Folding is better than hanging for most activewear. Hanging leggings and sports bras on hangers stretches out the waistband and straps over time, especially if they're left that way for weeks. Fold and stack in a drawer instead.

Make sure pieces are fully dry before storing. Even slightly damp fabric in a closed drawer is how mildew starts.

The Short Version

  • Powder detergent, no softener, no bleach
  • Cold water, full cycle
  • Laundry net, inside out, lights and darks separate
  • New piece gets a solo cold wash first
  • Don't leave it wet after washing
  • White vinegar soak for stubborn odour
  • Air-dry where possible, low heat if using dryer
  • Fold and store dry, don't hang

Follow this and your activewear will hold up significantly longer. Better shape, less odour, colours that don't fade. It's not complicated, just consistent.

Frequently Asked Questions

Can I machine wash activewear?

Yes, machine wash is fine and actually more consistent than hand-washing. Use cold water, a full cycle, and a laundry net for each piece.

Is powder or liquid detergent better for activewear?

Powder detergent is better. Liquid detergents, especially ones with added moisturisers or softeners, leave residue on synthetic fibres that traps odour and breaks down stretch over time.

How often should I wash gym clothes?

After every wear. Leaving sweat in the fabric even overnight starts to break down fibres and set odour in. If you can't wash immediately, air the piece out rather than sealing it in a bag or hamper.

Why does my activewear still smell after washing?

Residue buildup from detergent or old fabric softener is trapping bacteria in the fibres. Do a white vinegar soak (half cup in cold water for 30 minutes) before the next machine wash. Switch to powder detergent going forward.

Can I tumble dry leggings?

Low heat only, and take them out while still slightly damp to finish air-drying. High heat breaks down the elastic fibres in the waistband and reduces stretch permanently.

All Vivre pieces are made from performance fabrics designed to go the distance. If you have questions about a specific care label or fabric, tap the chat bubble on our site and VibeBot will help you out.