How to Get Blood Out of Clothes

To get blood out of clothes, rinse immediately under cold running water from the back of the stain, then soak in cold salt water or enzyme detergent before washing cool. Blood is protein. Hot water coagulates it and bonds it to the fibre permanently — this is the single mistake that turns a removable stain into a permanent one.

Why cold water, always

Haemoglobin denatures at around 40°C, the same way an egg white sets in a pan. Once denatured, the protein is mechanically locked into the weave and no amount of detergent will lift it. Every stage of blood removal happens in cold water, from the first rinse to the final wash cycle.

Fresh blood

1. Rinse immediately from the back under cold running water, pushing the blood out the way it came in.
2. Soak in cold salt water — one tablespoon per litre — for 30 minutes. Salt draws the protein out by osmosis.
3. Apply enzyme detergent neat and leave 15 minutes.
4. Wash cold, then air dry and inspect. Never tumble dry until the stain is completely gone.

Dried blood

Dried blood needs rehydrating before anything can lift it. Soak the garment in cold water for one to three hours, changing the water when it discolours. Then work in enzyme detergent and leave it another hour. For stubborn marks on white or colourfast fabric, apply hydrogen peroxide directly — it will foam as it reacts with the blood, which is the reaction doing its job. Rinse cold afterwards and repeat rather than leaving peroxide sitting on the fibre.

Delicates and wool

Enzyme detergents digest protein, and wool and silk are protein fibres — an enzyme soak will damage the garment itself. For these, use cold water, salt and a wool-safe detergent only, with patience instead of chemistry. Hydrogen peroxide is also unsafe on both.

The rust-coloured shadow

An old blood stain that has oxidised leaves a brown iron mark rather than a red one. Oxygen bleach soaking clears this on whites over four to eight hours. On colours, repeated cold enzyme soaks are the safer route, though a faint shadow sometimes remains on very old stains.

Frequently asked questions

Does hot water set blood stains?

Yes, permanently. Heat coagulates the protein into the fibre. Use cold water at every stage, including the wash cycle.

How do you get dried blood out of clothes?

Soak in cold water for one to three hours to rehydrate, then use enzyme detergent for another hour. Hydrogen peroxide works on whites and colourfast fabrics but not on wool or silk.

Does salt remove blood stains?

Cold salt water draws protein out of the fibre by osmosis and is genuinely effective on fresh blood. It is less useful once the stain has dried.

Can you get blood out after it has been through the dryer?

It is much harder because heat has denatured the protein, but long cold enzyme soaks combined with oxygen bleach on whites will often lighten it substantially. Treat it as a salvage attempt.

When you cannot list the garment as new

Oxidised protein leaves a brown cast that photographs darker than it appears in the room.

Shoot in daylight rather than under tungsten, which pushes the mark warmer still. Sellers replacing damaged stock regularly end up weighing studio costs against a virtual try-on or AI clothes changer workflow, and those are the tools we score.