After helping her elderly father-in-law with household chores following her mother-in-law’s passing, one woman noticed something unusual during laundry day.

Every time she used the washing machine, her father-in-law reminded her:

“Don’t forget to add the aspirin.”

Confused, she finally asked why he insisted on putting aspirin tablets into the laundry. His answer was simple:

“That’s how my wife always did it.”

The strange habit quickly sparked curiosity online after many people admitted they had never heard of using aspirin in washing machines before.

According to home-cleaning enthusiasts and old household tricks shared for generations, aspirin was sometimes used as a:

• whitening helper,
• stain remover,
• and fabric brightener,

especially for white clothes that had become dull or yellowish over time.

Some people believe the acetylsalicylic acid in aspirin may help break down sweat stains and mineral buildup on fabrics, making clothes appear cleaner and brighter after washing.

Traditional cleaning tips often suggested:

• dissolving a few aspirin tablets in warm water,
• soaking clothes before washing,
• or adding them directly into the machine with laundry detergent.

However, cleaning experts say results can vary depending on:

• fabric type,
• water temperature,
• and the ingredients inside modern aspirin products.

Specialists also warn that excessive use may not be suitable for all washing machines or delicate fabrics.

Still, many people online became emotional after hearing the story, saying the habit was not only about laundry —
but also a small routine that kept the memory of his late wife alive.

One commenter wrote:

“Sometimes old household habits carry more love than we realize.”

Others admitted they were now curious enough to try the unusual laundry trick themselves.