For most white clothes, use warm water ; for tougher whites like towels, sheets, and underwear , hot water is often best if the care label allows it.

Quick rule

  • Delicates / everyday whites: warm or cool water, depending on the fabric.
  • Heavily soiled whites: hot water, especially for towels and bedding.
  • Always check the care tag first: some fabrics can shrink or get damaged in hot water.

Simple answer

If you want one default: wash whites in warm water. If the items are sturdy and very dirty, go hot ; if they’re delicate, go cool or warm.

Extra tip

Separate whites from colors, and if you’re using bleach, make sure the fabric and label can handle it.