several towels develop similar orange marks, the water supply may be worth investigating.
2. Rusty Pipes or Washing-Machine Components
The problem doesn’t always start with the water itself.
Old plumbing, corroded metal components, or rust inside or around a washing machine can potentially transfer discoloration to laundry.
If you suddenly notice orange marks appearing on multiple loads, inspect the washing area rather than assuming the towels are the problem.
3. Skincare and Hair Products
Another possibility is something you’re putting on your body.
Some skincare products, acne treatments, hair products, and cosmetics can react with fabric or cleaning products and cause discoloration.
This is one reason a towel can develop mysterious stains even when your washing machine is working normally.
If the stains tend to appear where the towel touches your face, hair, or skin, consider whether a personal-care product could be responsible.
