Hot or Cold Water to Remove Stains? The Definitive Textile Science Guide
Choosing the incorrect water temperature permanently fuses a stain into fabric fibers. Hot water at or above 40°C / 104°F triggers thermal denaturation on protein-based stains. These stains include blood, sweat, and dairy. This molecular coagulation heat-sets the stain into the fibers. Cold water at or below 30°C / 86°F is mandatory for biological stains. […]
