There was a stretch of time when the towels stacked on my bathroom shelf felt more like sandpaper than something you'd actually want to wrap yourself in. And the strange part? I was using the exact same detergent and the exact same wash cycle I always had.
The fix turned out not to be an expensive fabric softener at all. It was a single spoonful of baking soda — and I've been tossing it into the drum ever since.
Why do towels turn stiff over time?
Towels stiffen because minerals from hard water, along with detergent and softener residue, build up between the fibers. That invisible layer stops the cotton loops from fluffing back up, and it also makes the fabric far less absorbent than it should be.
The more often you wash with the same products, the more this residue keeps piling up — until one day your favorite towel feels like a board.
The baking soda that resets everything
Baking soda is mildly alkaline, which means it dissolves the residue lodged between the fibers while also neutralizing any musty smells. There's no complicated routine involved: I sprinkle a single tablespoon straight into the drum, right among the towels, before I start the machine.
- I add one tablespoon of baking soda directly to the laundry, not the detergent drawer.
- I still use my regular detergent — just less of it than before.
- I skip the fabric softener this time, because it's the very thing that stops towels from fluffing up.
- I choose a 60°C (140°F) cycle, since warmer water dissolves the buildup more effectively.
The vinegar trick that takes it even further
Once a month I also pour half a cup of plain white vinegar into the softener compartment alongside the baking soda. The acidity strips away the film that detergent leaves behind, and the towels come out noticeably softer and fresher-smelling after they dry.
And don't worry about your towels smelling like vinegar — that scent disappears completely during the rinse and drying.
A few extra things worth keeping in mind
Too much detergent is a culprit in its own right, since the excess never rinses out of the fibers properly. If I notice my towels starting to feel board-like, I cut the dose in half. Drying them outside in the shade rather than in a dryer helps a lot too — cotton left in direct sun tends to harden more easily.
It also matters that I don't overload the machine. If there isn't enough room for the towels to tumble, the water and detergent can't move through the fabric evenly. I'd rather wash them in smaller loads than cram everything into one giant pile.
How long before you see a difference?
The first time, I only noticed a slight improvement. But after the third or fourth wash, the towels genuinely got that softness back — the same plush feel they had straight off the store shelf. These days, that spoonful of baking soda is as automatic a move as measuring out the detergent.
Can I use baking soda with every towel wash?
Yes. A single tablespoon added to the drum works as a regular part of your routine, helping to keep residue from building up between washes.
Do I still need detergent if I use baking soda?
Yes, but less than usual. Baking soda works alongside your regular detergent — you simply cut the detergent amount down a little.
Why should I skip fabric softener on towels?
Fabric softener coats the fibers with a layer that prevents the cotton loops from fluffing up, which is exactly what makes towels feel stiff and less absorbent.
Will the vinegar smell linger on my towels?
No. The vinegar scent disappears entirely during the rinse and drying, leaving the towels smelling fresh rather than sour.
