Blood on Wool
Blood proteins set permanently in heat. Always use cold water — never warm or hot.
checklistTreatment Steps
Critical Warning
Never use hot water or agitation on wool — both cause irreversible felting and shrinkage. Use cool water and the gentlest possible motion. Avoid regular detergents, bleach, and enzyme cleaners — they break down wool's protein structure. Never tumble dry.
helpFrequently Asked Questions
How quickly should I treat a blood stain on wool?
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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 wool?
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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 wool 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 wool 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 wool?
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Only if the care label specifically allows it — and never on coloured wool. Bleach can weaken fibres and create permanent white patches. Oxygen bleach (non-chlorine) is a gentler option when bleaching is needed.