How to wash smelly polyester?

Polyester is a popular fabric for activewear and outdoor gear due to its durability and moisture-wicking properties. However, it can also trap odors, leading to that persistent "gym smell." Fortunately, you can effectively wash smelly polyester to restore its freshness.

Tackling That Lingering Polyester Odor: A Comprehensive Guide

Smelly polyester can be a persistent problem, especially for athletic apparel and outdoor gear. The synthetic fibers in polyester tend to trap body oils and bacteria, which then create unpleasant odors. This guide will walk you through the best methods to wash smelly polyester, ensuring your favorite items smell fresh again. We’ll cover everything from pre-treatment to the best washing techniques and drying methods.

Why Does Polyester Get Smelly?

Polyester is a synthetic polymer known for its strength and resistance to stretching and shrinking. While these qualities are beneficial, they also mean polyester doesn’t breathe as well as natural fibers. This reduced breathability traps moisture and heat, creating an ideal environment for odor-causing bacteria to thrive. These bacteria feed on body oils and sweat, releasing volatile organic compounds that we perceive as unpleasant smells.

Pre-Treating Smelly Polyester for Optimal Results

Before you even toss your polyester items into the washing machine, a little pre-treatment can make a world of difference. This step is crucial for breaking down stubborn odors and bacteria.

Soaking Smelly Polyester

One of the most effective pre-treatment methods is soaking. You can use a variety of solutions to help lift those embedded smells.

Vinegar Soak: Mix one part white vinegar with four parts cold water in a basin or sink. Submerge the polyester items completely and let them soak for at least 30 minutes, or even overnight for very stubborn odors. The acetic acid in vinegar helps to neutralize alkaline odors.
Baking Soda Paste: For localized, intense smells, create a paste of baking soda and water. Apply this paste directly to the affected areas and let it sit for 15-30 minutes before washing. Baking soda is a natural deodorizer.
Enzyme Cleaners: Specialized laundry additives containing enzymes can break down organic matter like sweat and body oils. Follow the product instructions carefully for the best results.

Washing Smelly Polyester: Machine Settings and Detergents

Once pre-treated, it’s time to move to the washing machine. The right settings and detergent are key to a successful wash.

Best Washing Machine Settings for Polyester

Using the correct machine settings ensures that you clean the fabric effectively without damaging it.

Water Temperature: Always use cold or warm water. Hot water can sometimes set stains and odors into synthetic fibers, making them harder to remove. Cold water is generally sufficient for cleaning and is gentler on the fabric.
Wash Cycle: Opt for a gentle or delicate cycle. This reduces agitation, which is less harsh on the polyester fibers and prevents them from stretching or losing their shape.
Load Size: Avoid overcrowding the washing machine. Give your polyester items plenty of room to move freely in the water and detergent. This allows for better cleaning and rinsing.

Choosing the Right Detergent

Not all detergents are created equal when it comes to tackling synthetic odors.

Sport-Specific Detergents: These are formulated with specialized ingredients designed to break down the oils and bacteria commonly found in athletic wear. They are often more effective than standard detergents.
Detergents with Enzymes: Look for detergents that list enzymes as an active ingredient. These enzymes are powerful at breaking down organic compounds that cause odors.
Avoid Fabric Softeners: Fabric softeners can coat polyester fibers, reducing their breathability and moisture-wicking capabilities. They can also trap odors over time.

Drying Polyester: What to Do and What to Avoid

The way you dry your polyester items is just as important as how you wash them. Improper drying can reintroduce odors or damage the fabric.

Air Drying vs. Machine Drying

Air Drying: This is the safest and most recommended method for drying polyester. Hang your items on a drying rack or clothesline away from direct sunlight, which can degrade synthetic fibers over time. Ensure good air circulation.
Machine Drying: If you must use a dryer, select the lowest heat setting or an air-fluff cycle. High heat can melt or damage polyester fibers, leading to permanent deformation and potentially making odors worse by setting them deeper into the fabric. Always remove items promptly once dry.

Natural Deodorizing Boosters for Your Laundry

Beyond vinegar and baking soda, several other natural boosters can enhance your polyester’s freshness.

Lemon Juice: Similar to vinegar, the citric acid in lemon juice can help neutralize odors. Add about half a cup to your wash cycle.
Essential Oils: A few drops of tea tree oil or eucalyptus oil can add a pleasant scent and have antimicrobial properties. Add them to the rinse cycle.

Dealing with Stubborn Odors: Advanced Tips

Sometimes, even with the best efforts, a faint odor might linger. Here are a few extra steps you can take.

Double Washing

If the smell persists after the first wash, don’t hesitate to run the load a second time. You might need to repeat the pre-soaking step as well.

Sun Exposure

For items that can tolerate it, a few hours in direct sunlight can be a natural deodorizer and disinfectant. However, be mindful of prolonged exposure, as it can fade colors.

How to Prevent Smelly Polyester in the Future

Prevention is always better than cure. Implementing a few habits can significantly reduce the likelihood of your polyester items developing strong odors.

Prompt Washing

Don’t let sweaty polyester items sit in your gym bag or hamper for extended periods. Wash them as soon as possible after use to prevent bacteria from multiplying.

Proper Storage

Ensure that items are completely dry before storing them. Damp polyester can develop mildew and unpleasant smells even when clean.

Regular Deodorizing Washes

Periodically wash your polyester items with a sport-specific detergent or a vinegar rinse to maintain their freshness, even if they don’t smell particularly bad.