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Why is my Stain Remover too runny or too thick?Updated 13 days ago

TL;DR: If Stain Remover feels too runny or too thick, it's usually temperature related. Bring the bottle back to room temperature and shake gently to restore consistency. Cleaning performance isn't affected.


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Koh Stain Remover
Koh Stain Remover with Foaming Spray Bottle

Why does it happen?

Stain Remover contains xanthan gum, a thickener that keeps the ingredients evenly suspended. Xanthan gum gets thinner in heat and more gel-like in cold. Storage or delivery temperature swings can change how the spray feels without affecting performance. The rest of the formula is unchanged either way.

✓ Temperature changes consistency

Stain Remover contains xanthan gum, a thickener that keeps the ingredients evenly suspended in the bottle. Xanthan gum gets thinner in heat and more gel-like in cold. Storage or delivery temperature swings can change how the spray feels without affecting cleaning performance.

Heat = thinner Cold = thicker Performance unaffected

How do I fix it?

Leave the bottle at room temperature for 30 to 60 minutes. Shake gently to remix. Then test the Foaming Spray Bottle: a fine, foamy spray is what you're looking for. If the consistency hasn't returned, give it longer. Cold bottles can take a couple of hours to settle back to room temperature.

✓ Quick fix in 3 steps

1

Leave the bottle at room temperature for 30 to 60 minutes.

2

Shake gently to remix.

3

Test Foaming Spray Bottle. A fine, foamy spray is what you're looking for.

If the consistency hasn't returned, give it longer. Cold bottles can take a couple of hours to settle back to room temperature.


Where should I store it?

Store Stain Remover sealed and upright in a cool, dry place away from direct sunlight, ideally between 15 and 25 degrees Celsius. Inside the house is better than the garage or shed. Avoid hot cars in summer, sunny windowsills, unheated outdoor storage, and anywhere near heaters, ovens, or dryers. The product is shelf-stable when stored properly and consistency stays predictable.

✓ Ideal storage

Sealed and upright

Cool, dry place away from direct sunlight

Stable room temperature between 15 and 25°C

Inside the house rather than in garages or sheds

⚠ Places to avoid

! Hot cars in summer

! Sunny windowsills

! Unheated sheds or outdoor storage

! Above or near heaters, ovens, or dryers


Koh Stain Remover

Stain Remover

Spray-on pre-treat for stubborn stains. Spray, wait, then wash.

Koh Stain Remover Starter Kit

New at Koh?

Stain Remover Starter Kit pairs Stain Remover with the Foaming Spray Bottle for targeted application.

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Last reviewed: May 2026


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