6 items that should not be washed with fabric softener

By Duc Tran   October 6, 2026 | 04:08 pm PT Google Get VnExpress first in Google Search info See more of the news you trust. Make VnExpress a preferred source to prioritise our updates in your Google search results
Fabric softener can reduce towels’ absorbency, interfere with sportswear’s sweat-wicking ability and leave white clothes looking dull.

Fabric softener makes laundry feel smoother by leaving a thin coating on fabric fibers. However, repeated use can cause buildup and affect the function of certain materials, scientific adviser Jus Rai explained in Which?.

Over time, fabric softener can also contribute to stiff clothing, reduced cleaning effectiveness, skin irritation and increased flammability in some fabrics.

Here are six items best washed without fabric softener.

1. Towels

Fabric softener can coat towel fibers and gradually reduce their ability to absorb water, leaving towels softer but less effective at drying.

To keep towels fluffy, shake them vigorously before hanging them to dry. If permitted by the care label, tumble-dry them for about 10 minutes before air-drying.

2. Microfiber cleaning cloths

Microfiber cloths rely on extremely fine fibers to collect dirt and moisture. Fabric softener can coat these fibers and reduce their cleaning effectiveness, cleaning analyst Noah Pinsonnault told Good Housekeeping.

If softener is accidentally used, wash the cloths again as soon as possible. E-Cloth also recommends avoiding detergents containing added fabric softener when washing its microfiber products.

3. Moisture-wicking sportswear

Performance sportswear is designed to draw sweat away from the skin. Fabric softener can coat synthetic fibers and interfere with this process, making the clothing less effective at keeping the wearer dry.

Washing these garments without softener helps preserve their moisture-wicking properties.

Towels in the laundry. Photo from Pexels.

Towels in the laundry. Photo from Pexels

4. Water-repellent outerwear

Fabric softener can interfere with the coatings or membranes that help some jackets repel water.

Not all waterproof garments are affected in the same way, so their care labels should be checked before washing.

5. White clothes

Fabric softener can leave residue that causes white fabrics to appear dull over time, cleaning expert Karina Toner told Real Homes.

Excess detergent can also leave residue, so the recommended amount should be used for each laundry load.

6. Flame-resistant clothing

Fabric softener should not be used on garments labeled flame-resistant, including some children’s sleepwear. It may increase flammability and weaken the fabric’s protective properties.

The washing instructions on the garment’s care label should always be followed.

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