🧪 Why Do Tile Grout Lines Turn Black?
Before discovering the trick, it’s helpful to understand why grout lines get blackened:
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Standing humidity promotes the growth of mold
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Grease splatters from cooking get embedded
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Soap and shampoo residue from the shower stick to them
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Dust and bacteria accumulate over time
Result: the grout becomes dirty, discolored, and sometimes even smelly. But don’t worry! There’s an ultra-simple and incredibly effective home remedy: soap heated in the microwave.
🧼 The Trick: Heat Soap in the Microwave to Clean Grout Lines
✨ Why Heat the Soap?
Heating liquid or block soap helps liquefy it, concentrate its active ingredients, and make it more penetrating in the tiny cracks of grout lines. This allows for deep cleaning without too much scrubbing.
📝 What You’ll Need:
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1 microwave-safe glass bowl
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2 to 3 tablespoons of liquid Marseille soap (or black soap)
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1 tablespoon of baking soda
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A few drops of white vinegar (optional but enhances the effect)
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An old toothbrush or a grout brush
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A sponge and a microfiber cloth
🔥 Instructions:
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