Why does Stain Remover look cloudy or yellow?Updated 13 days ago
TL;DR: A faint yellow tint or mild cloudiness in Stain Remover is normal, safe to use, and doesn't affect cleaning performance. Shake gently and let it return to room temperature if it's been cold. If something looks or smells genuinely off, get in touch.
Why does it happen?
✓ Natural formula variation
Stain Remover is made without added dyes or colour stabilisers, so what you see is the unaltered formula. Natural variation can give the liquid a faint yellow tone or a little haze. Temperature swings during storage or delivery can also make the formula look cloudy until it settles back to room temperature.
What should I do?
✓ Quick fix
Shake the bottle gently to remix.
If the product has been cold, let it come back to room temperature, then shake again.
For extra peace of mind, do a quick spot-test on a hidden seam before treating the visible stain.
What's normal vs concerning?
✓ Normal looks like
✓ Faint yellow to pale straw tint
✓ Slight haze or cloudiness that clears after shaking
✓ Mild, neutral scent
✓ Slight variation in tone between bottles
⚠ When to get in touch
! Strong, foul, or off smell
! Separation that won't remix after warming and shaking
! Visible contamination or particles floating in the liquid
! Damaged packaging or a leaking bottle on arrival
Spray-on pre-treat for stubborn stains. Spray, wait, then wash.
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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