This trick sounds like a classic TV commercial, but unlike polystyrene for lights, this one actually works. The “two tablets” that laundry detergent manufacturers don’t like are plain Aspirin (acetylsalicylic acid).
Here’s why this cheap first aid kit can save yellowed or grayed laundry.
Why does Aspirin work on white laundry?
The magic isn’t in the magic, but in the acid that Aspirin contains.
Dissolves dirt: The acid gently breaks down the structure of stains, especially those from sweat and deodorant (those yellow maps in your armpits).
Whites without chlorine: Unlike harsh bleaches, it doesn’t damage the fibers of the fabric, so your T-shirts won’t be “holey” after five washes.
Removes graying: Helps wash away detergent residue and hard water minerals that make whites look “dirty.”
How to do it right (2 methods)
- Method: Overnight Soak (Most Effective)
This is the method for clothes that are already significantly grayed.
Crush 5 Aspirin tablets (325 mg) in hot water.
Submerge the laundry in the solution and let it sit for at least 8 hours (overnight).
Then machine wash as usual.
- Method: Direct Wash (Quick)
If you just want to keep your whites bright.
Crush 2 to 3 tablets and add them directly to the drum of your washing machine with your clothes.
Add half the amount of regular powder.
Comparison: Aspirin vs. Commercial Bleach
Property Aspirin (2-3 tablets) Commercial Bleach (chlorine)
Price A few cents A few euros
Fabric Gentleness High (suitable for delicate items) Low (fibers become brittle over time)
Smell Neutral Harsh chemical
Effect on sweat stains Excellent Often sets stains even more
💡 Alternative “peer trick”
If you don’t have Aspirin, dishwasher tablets will do the same job.
One tablet in the washing machine drum (at 60 °C) will whiten curtains or bed linen so that they shine.
Caution: Do this only for durable fabrics, not silk or lace, as dishwasher tablets are very strong degreasers.
A word of caution: Use plain white Aspirin, not the fizzy orange-flavored or vitamin C-flavored versions—they’re more likely to stain your clothes.
Want to know how to remove even the toughest red wine or grease stains using things you have in your kitchen?