What water temperature will prevent stains from setting into clothes?
user
Water with a temperature lower than 105.6 °F / 41.1 °C will usually prevent stains from setting in clothing.
assistant
What water temperature will prevent stains from setting into clothes?
user
Hmm, are you talking about fresh water or salt water?  What kind of stain do you want to prevent?  Is it coffee, or ink, or tea, or wine?
assistant
What water temperature will prevent stains from setting into clothes?