Many people throw away dryer sheets after one use, but soaking a used sheet in a greasy pan overnight may help loosen baked-on residue

That fabric softener sheet you tossed in the trash after you dried your laundry may have one more job left in it. Home cooks across the US have embraced a new trick. Instead of throwing a used dryer sheet into the garbage, toss it in your dirtiest pots and pans, let it sit in warm water overnight, then rinse away the grease.

A 2015 study, ‘Molecular mechanisms for surfactant-aided oil removal from a solid surface,’ in Applied Surface Science found that the conditioning agents that coat dryer sheets are part of a class of surfactants that have long been studied for their ability to pull oil away from solid surfaces on a molecular scale. The trick sounds almost too easy, but the science behind it holds up.

What actually happens when you soak a dryer sheet
If you’ve ever stood at the sink, scraping a pan with a fork and wondering if there’s an easier way to do it, you’ll understand why this hack caught on. Dryer sheets contain fabric softening agents, and most of those agents belong to a family of compounds called quaternary ammonium compounds. They are a type of cationic surfactant, which means that one end of the molecule carries a positive charge. A used sheet releases compounds into warm water.


The compounds diffuse into the water. Once floating free in the pan, surfactants, which are meant to connect oily and watery substances, can work on the layer of burnt grease and food residue that has adhered to the metal.

The chemistry that backs it up
Surfactant-based cleaning is not a social media invention. It is a well-studied area of chemical engineering, in part because industries have spent decades looking for water-based alternatives to harsh solvents for degreasing metal surfaces. A 2002 peer-reviewed study, ‘Oil Detachment from Solid Surfaces in Aqueous Surfactant Solutions as a Function of pH,’ in Industrial & Engineering Chemistry Research examined the effect of various surfactants, including a cationic surfactant from the same family of chemicals as those used in fabric softeners, on the rate at which oil leaves a stainless steel surface. The researchers found that the electrical charge of a surfactant and how that charge compares with the charge of the surface have a lot to do with how quickly and completely the oil lifts away. In layman’s terms, if the surfactant and surface cooperate, the oil is released and rises rather than staying in place.

The 2015 study in Applied Surface Science dug even deeper into the reasons for this. Molecular-level simulations helped researchers map how surfactants actually pry oil off a solid surface and found that the process can occur in three distinct ways, depending on the surfactant’s structure: the oil can be carried off inside tiny droplets formed by the surfactants, stripped off as an intact film, or slowly pulled apart and diffused into the surrounding water. That gives the dryer sheet trick a more specific mechanism and shows that researchers have mapped the process down to the molecular level.

It is worth being upfront that neither study tested dryer sheets on pans directly; both studies looked at surfactant behavior in controlled lab settings. But collectively, they support the larger idea that cationic surfactants, the same kind of ingredient found in fabric softeners, can help remove oily residue from metal surfaces with little physical effort.

Does it hold up in a real kitchen
Many people have tried it in practice, not just in theory. According to Food Network, a recipe developer tried the method on a sausage-grease-covered sheet pan and was impressed, noting that the pan came out clean with just a couple of spots that a sponge easily took care of. The Kitchn noted that one writer soaked a badly scorched pot overnight with a dryer sheet and dish soap, and most of the burnt bits flaked off with barely any scrubbing the next morning.

The general procedure is pretty similar across home tests: fill the dirty pan with warm water, squirt in some dish soap, drop in one or two dryer sheets, and let it sit for an hour or overnight for tougher messes. Then the residue is generally loose enough to be wiped away with little scrubbing.

A few things worth knowing before you try it
There are downsides to this hack, and it helps to go in with realistic expectations. Dryer sheets have fragrance chemicals that can stick to cookware after washing, which isn’t ideal if you would rather your dinner not taste faintly of laundry detergent. Because dryer sheets are formulated with a mix of synthetic fragrances and conditioning chemicals, those with sensitive skin or allergies to fragrances may also want to take caution when handling the soaked sheets. Food Republic also says this method is best avoided on cast iron pans as the chemicals can remove seasoning and affect the non-stick surface.

The bottom line
The used dryer sheet trick is not magic, but it is grounded in surfactant chemistry, the same chemistry researchers study to get oil off metal surfaces without harsh solvents. It’s a low-lift option worth trying before turning to the steel wool for a run-of-the-mill burnt pan, so long as cast iron is off the table and the pan gets a good rinse afterwards. Worst case, it is one dryer sheet that was headed for the trash anyway.