You stepped out of the shower this morning, grabbed a bath towel that looks almost new, and had to drag it across your skin two or three times to feel dry. It didn’t soak up the water. It kind of pushed it around.
If that’s familiar, the problem isn’t your towels. They aren’t old, cheap, or worn out. Something you keep adding to your laundry on purpose is quietly killing them, and most American households drop it into the wash every single time.
It isn’t your towels, it’s what you’ve been doing to them
Back in 2003, researchers at Virginia Tech ran cotton and polyester cloth through 25 full laundry cycles. The cotton samples (the stuff your bath towels are made of) came out much worse at pulling water through the fibers after being washed over and over with one everyday laundry product.
A newer study in the International Journal of Clothing Science and Technology ran the same test and got the same result: this one product, used again and again, makes cotton significantly worse at soaking up water.
Choice, the Australian consumer-testing lab (think of it as their Consumer Reports), warns readers in its laundry tests that this product “may reduce the water absorbency of your towels” as a known side effect of how it works.
Three different labs on three different continents, all saying the same thing: the stuff slowly coats your towels and shuts them down.
Try this on your bathroom counter tomorrow
Before we name it, try this on your own bath towel tomorrow. Lay it flat on your counter and drip three or four drops of tap water onto it from a couple of inches up.
If the drops sink in and spread out in a second, your towel is fine. If they just sit on top in little round beads and need a push to soak in, you’ve got the problem. The towel feels soft, but still leaves your skin damp a minute after you towel off.
That beading isn’t a sign your towel is new. It’s a sign your towel has been sealed shut.
Big hotel chains know this cold. The ones washing hundreds of towels a day refuse to use the supermarket version of what we’re about to name, as the industry supplier Towel Super Center openly tells its customers. A hotel can’t hand a guest a towel that just smears water around their back.
The bottle in your laundry room is doing it
The product coating your towels is liquid fabric softener. The one in the big pastel bottle that promises softness and a floral smell.
Fabric softener works by leaving a thin, waxy, water-repelling film on the cotton fibers, as the laundry chemists at Dirty Labs explain. That film makes a brand-new towel feel plush out of the dryer. A dozen washes later, the same film is what makes the towel push water around instead of soaking it up. The coating doesn’t rinse out. It builds up until the little loops that grab water are sealed under a layer of wax.
How to bring your towels back this weekend
The fix is cheap, takes one wash cycle, and anyone can do it tonight.
- Stop putting fabric softener in with your towels. Not half a cap, not once a month, not ever.
- Run the towel load on the hottest setting the care tag allows (for most cotton bath towels, that’s 104 to 140°F or 40 to 60°C).
- Instead of softener, pour one cup of plain distilled white vinegar (the regular 5-percent grocery-store kind, not cleaning vinegar, not apple cider) into the softener drawer, or straight into the drum right when the rinse cycle starts. Never mix vinegar with bleach in the same load, that combo gives off harmful fumes.
- Skip the dryer sheet too. Tumble dry on medium, or line dry.
- For towels that have been washed with softener for years, run this wash twice in a row to lift the full buildup.
The vinegar smell rinses out in the final rinse. The acid breaks down the waxy softener residue and the hard-water gunk stuck to it, without leaving its own film behind. After that, keep the vinegar in your routine every third or fourth wash and your towels will stay thirsty for years.
If you miss something that fights static in the dryer, drop in two or three wool dryer balls with the towels. They do the job without coating the fibers.
You just took back the towel you paid for.
Sources: (1) Virginia Tech, The Effects of Household Fabric Softeners on the Thermal Comfort and Flammability of Cotton and Polyester Fabrics; (2) International Journal of Clothing Science and Technology, Influence of repeated household fabric softener treatment on the comfort characteristics of cotton and polyester fabrics; (3) Choice (Australia), How we test fabric softeners; (4) Towel Super Center, Why You Shouldn’t Use Fabric Softener on Towels; (5) Dirty Labs, Is Fabric Softener Bad for Clothes.
