Blood on Cotton
Blood proteins set permanently in heat. Always use cold water — never warm or hot.
checklistTreatment Steps
Critical Warning
Do not use hot water or put the item in the dryer before the stain is fully removed — heat permanently sets most stains into cotton fibers. Avoid bleach on coloured cotton — use it only on whites, and even then test first.
helpFrequently Asked Questions
How quickly should I treat a blood stain on cotton?
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Blood proteins set permanently in heat. Always use cold water — never warm or hot. As a rule, fresh stains lift much more easily than dried ones — try to treat within the first hour for the best results.
Will hot water set blood stains on cotton?
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Yes. Hot water permanently sets protein-based stains like blood. Always start with cold or lukewarm water.
Can I machine-wash cotton after treating a blood stain?
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Yes — once the stain is fully lifted, machine wash according to the care label. Never run cotton through the dryer if the stain is still visible: heat will set it permanently. Air dry and inspect the area first.
What if the blood stain comes back after drying?
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Stains that reappear are usually residue or oil that wicked back up as the fabric dried. Repeat the treatment from step one, and avoid heat-drying until the stain is completely gone. Multiple gentle passes work better than one aggressive treatment.
Can I use bleach to remove blood from cotton?
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Only if the care label specifically allows it — and never on coloured cotton. Bleach can weaken fibres and create permanent white patches. Oxygen bleach (non-chlorine) is a gentler option when bleaching is needed.