After my mother-in-law passed away, I started helping my father-in-law with laundry and other chores. He asks me to add aspirin to the washing machine every time I do the laundry. When I asked him why, he said that’s how his wife used to do it. Any idea what aspirin does?

Yes! What your father-in-law is doing has a real effect, even if it seems unusual at first. Here’s a detailed explanation:

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1. Why People Add Aspirin to Laundry

• Aspirin contains acetylsalicylic acid, which can brighten and whiten clothes, especially whites.
• The acid works by breaking down certain stains and dulling yellowing in fabrics.

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2. How It Works

• When aspirin is dissolved in water (usually hot water), the salicylic acid can help:
  1. Remove stains – particularly sweat stains or yellowing on white fabrics.
  2. Brighten colors – helps restore dull whites and light-colored clothing.
  3. Soften fabric slightly – though not as much as commercial softeners.

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3. How to Use It Safely

1. Dissolve 2–3 uncoated aspirin tablets in a small amount of hot water.
2. Add the solution to your washing machine along with detergent.
3. Wash as usual.

Tips:

• Works best on cotton or linens, not delicate fabrics like silk or wool.
• Use plain, uncoated aspirin—coatings may not dissolve well.
• Don’t overuse; too much acid can eventually weaken fibers over time.

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4. Why People Keep This Tradition

• Many households have “old-school” cleaning tricks passed down through generations.
• Your father-in-law is likely following his late wife’s method because it worked for brightening clothes.

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💡 Summary:
Adding aspirin to laundry is a traditional trick to brighten whites, reduce yellowing, and help remove stains. It’s harmless when done occasionally and works best on cotton or linen fabrics.

If you want, I can also give a step-by-step guide for using aspirin in the laundry including the exact number of tablets and method for best results.

Do you want me to make that guide?