I kept having stains on my clothing after wash... It's the same detergent & washer my wife use but seems only my batch get stains. : r/whatisthisthing
Hard Water Stains on Light Colored Material and Clothing - Home-Ec 101
Washing Machine Stains: Possible Causes And Cures
The girl holds in her hands a white dress with red spots and an example with a clean dress without a stain after washing, washing dirty clothes, dirty Stock Photo - Alamy