We’ve all been there—pulling a stiff, scratchy towel from the linen closet and sighing in disappointment. Over time, even the fluffiest towels can lose their softness, becoming rough and unwelcoming. Before you toss them out or relegate them to the rag pile, there’s a surprisingly simple trick to revive them: boiling them with salt. This age-old method can breathe new life into your towels, restoring their plush texture without harsh chemicals or expensive treatments.

The science behind this hack lies in the way towels accumulate residue. Detergent buildup, hard water minerals, and body oils gradually cling to the fibers, leaving them stiff and less absorbent. While fabric softeners might seem like a quick fix, they often coat the fibers with a waxy layer that reduces absorbency over time. Salt, on the other hand, acts as a natural abrasive and solvent, breaking down residue without damaging the fabric. When combined with heat, it opens up the fibers, allowing trapped grime to loosen and rinse away.

To try this method, start by filling a large pot with enough water to submerge your towels. Add a cup of plain white salt—avoid using iodized or scented varieties, as additives may interfere with the process. Bring the water to a rolling boil, then carefully add the towels. Let them simmer for about five minutes, gently agitating them with tongs to ensure even treatment. The boiling water helps the salt penetrate deep into the fibers, while the agitation dislodges stubborn particles.

After boiling, drain the water and rinse the towels thoroughly under cool running water. This step is crucial; any remaining salt or loosened debris could redeposit onto the fabric. For extra measure, run the towels through a regular wash cycle with a mild detergent—skip the fabric softener. Once dried, you’ll notice a remarkable difference. The towels will feel softer, more absorbent, and even smell fresher, as the process also eliminates odor-causing bacteria trapped in the fibers.

This technique isn’t just limited to bath towels. Kitchen linens, gym towels, and even older bedding can benefit from a salt boil. It’s particularly effective for cotton and bamboo fabrics, which are prone to mineral buildup. For blended fabrics or delicate materials, reduce the boiling time to three minutes and monitor the process closely to avoid damage. Always check care labels beforehand, as some synthetic fibers may not tolerate high heat.

Beyond salt, a few complementary practices can extend the life of your towels. Wash them in warm—not hot—water to prevent fiber breakdown, and avoid overloading the machine to ensure proper rinsing. Skip the dryer sheets, which can leave a residue, and opt for wool dryer balls instead to fluff the fibers naturally. Line drying in sunlight not only saves energy but also has a mild bleaching effect that keeps whites bright.

Why does this method work when commercial products often fail? Commercial softeners mask the problem with coatings, whereas salt addresses the root cause by stripping away buildup. It’s also cost-effective—a box of salt costs pennies compared to specialty laundry additives. Plus, it’s eco-friendly, reducing the need for chemical-laden products and keeping towels out of landfills longer.

Next time your towels lose their loft, don’t despair. With just a pot, some salt, and a little patience, you can restore them to their former glory. This humble kitchen staple might just become your laundry room’s best-kept secret.