water, the iron can oxidize—similar to how metal rusts—leaving behind orange or brown stains embedded in the fabric.
Signs of Hard Water Stains:
Stains appear after washing or drying
They are darker, not lighter
You may notice similar residue in sinks or toilets
These stains are difficult to remove because regular detergent does not break down mineral deposits.
🦠 Bacteria and Damp Towels
Bathrooms are naturally humid, and towels often stay damp for long periods. This creates the perfect environment for bacteria to grow.
Certain bacteria—like Serratia marcescens—can produce pink, orange, or rust-colored residue that sticks to fabric fibers.
Why It
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