Yes—this is an old household “hack,” but it’s based more on anecdote than strong evidence.
Why someone would add aspirin to laundry
Aspirin contains acetylsalicylic acid, which is mildly acidic. People traditionally believed it could:
1. Help brighten white clothes
The idea is that mild acidity might help reduce yellowing or dullness in fabrics, similar to how lemon juice or vinegar is sometimes used.
2. Remove stains
Some believe it can help with sweat or protein-based stains (like underarm marks), especially on white clothing.
3. “Freshen” laundry water
Old laundry practices sometimes used household medicines as substitutes for modern detergents or boosters.
Does it actually work?
In modern laundry science:
- There is no strong evidence that aspirin meaningfully whitens clothes better than normal detergents or oxygen bleach
- Any effect is likely weak or inconsistent
- Modern products like enzyme detergents and oxygen-based stain removers work far better and more reliably
Possible downsides
Using aspirin in a washing machine can:
- Leave residue in some cases
- Be unnecessary when good detergent already does the job
- Potentially irritate sensitive skin if not fully rinsed out
- Add cost without real benefit
Why his wife might have done it
This is common with older household traditions:
- Earlier detergents were less effective
- People used whatever was available (aspirin, baking soda, vinegar, etc.)
- “Laundry hacks” were passed down as trusted routines, even if not scientifically tested
A gentle way to handle it
If you want to respect his routine but improve practicality, you could:
- Continue a small “symbolic” amount if it matters emotionally to him
- Or suggest safer modern alternatives like:
- Oxygen bleach for whites
- Baking soda for odor
- Enzyme detergent for stains
Bottom line
Aspirin in laundry is an old home remedy, not a necessary or scientifically proven method. It likely won’t harm clothes in small amounts, but it also doesn’t offer real benefits compared to modern laundry products.
If you want, tell me what kind of stains or clothes you’re dealing with, and I can suggest better targeted solutions.