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The stain didn’t come out after washing. What now?Updated 24 minutes ago

TL;DR: A second application usually does it. Reapply Stain Remover, wait 10 to 15 minutes, agitate gently with a soft brush, then rewash. Keep the item out of the dryer and away from a hot iron until the mark has gone, because heat sets a stain in place.


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Koh Stain Remover
Koh Stain Remover Starter Kit with Foaming Spray Bottle

The stain didn't come out after washing. What now?

If the stain is still there after a wash, treat it again before it goes anywhere near heat. Check the item is still damp or dampen the area, spray Stain Remover from the Foaming Spray Bottle until the mark is evenly covered with foam, and use it at full strength rather than diluting it. Leave it 10 to 15 minutes on a second application, which is longer than the 5 to 10 minutes a first treatment needs. Agitate gently with a soft brush, then rewash following the garment care label. Air dry and check the result before using a dryer or an iron.

1

Treat it again before it dries

Keep the item damp, or dampen the area. A stain that has been through a dryer is much harder to shift.

2

Respray and give it longer

Spray from the Foaming Spray Bottle until the mark is evenly covered with foam, at full strength rather than diluted. Leave it 10 to 15 minutes this time, rather than the 5 to 10 a first treatment needs.

3

Agitate gently

Work the foam in with a soft brush or cloth. Gentle and repeated beats hard and once.

4

Rewash, then air dry and check

Wash following the garment care label, then air dry and look at the result before the item goes near a dryer or an iron.

How do I use Stain Remover?


Why didn't it come out the first time?

The usual reasons a stain survives one treatment are that it was not left long enough, the coverage was thin, the stain was old, or heat got to it first. Stain Remover needs 5 to 10 minutes of contact time to work, and the foam needs to cover the whole mark rather than sit on part of it. Fresh stains lift faster than set-in ones. A stain that has already been through a dryer or under a hot iron has been set by that heat and takes more work. None of these mean the product has failed, they usually mean a second, longer application is needed.

Not enough dwell time

The foam needs 5 to 10 minutes of contact to work. Straight into the machine gives it no chance.

Thin coverage

The whole mark needs covering with foam, edges included, at full strength rather than diluted.

An older stain

Fresh marks lift faster. Set-in stains are not lost, they just take more than one go.

Heat got there first

A dryer cycle or a hot iron sets a stain in the fibre, which is why we say air dry until it is gone.


What if it still hasn't shifted?

If a second treatment has not lifted the mark, check the fabric before going again. Stain Remover is not for wool, silk, cashmere, alpaca or mohair, because the enzymes act on protein fibres. Some stain types also have their own method, hair dye and carpets being the two most common, and those have their own articles. If the fabric is suitable and the stain type is straightforward, a third application is reasonable, but do not keep escalating on a delicate item. Get in touch with the Koh-mmunity Support Team if you would rather talk it through.

Check the fabric before you go again. Stain Remover is not for wool, silk, cashmere, alpaca or mohair, because the enzymes act on protein fibres.

Some stains have their own method rather than just more of the same. If the fabric is suitable and the stain type is straightforward, a third application is reasonable, but don't keep escalating on something delicate.

⚠ No dryer and no iron until the mark has gone

Heat sets a stain into the fibre and makes it far harder to remove afterwards. Air dry, check the result in good light, and only then finish the item off.


How do I use Stain Remover

How do I use Stain Remover?

The full method from the first spray, including dwell time and how to agitate.

Koh Stain Remover Starter Kit

Stain Remover Starter Kit

Stain Remover with the Foaming Spray Bottle it needs to foam properly.

Browse all Stain Remover articles

Last reviewed: August 2026 · Koh UK

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