Prep first
Before you start
- Wipe up any spill with a paper towel or cloth right away.
- Pretest any cleaner on a small, hidden area and let it dry to check the result.
- Start with warm water and a white nylon pad before reaching for a cleaner.
- Don't let cleaning solution dry on the surface.
Yellow in grout lines is a color change, and the binder inside your grout decides how it responds. Cement-based grout takes stains into itself, but epoxy grout can be restored to its first shade with patient cleaning. Old yellowing can be stubborn, so expect to repeat the cleaning if the first round only lightens it.
Yellow stains in shower grout often respond to a stiff brush and a grout cleaner worked along the lines. Work one small patch of lines at a time, and rinse before the cleaner dries on the tile. If the lines stay yellow after a few rounds, a tile professional can tell you whether regrouting makes more sense.
Before you start
What grout can take
Safe to use4
- Water
- Hot water
- Enzyme cleaners
- Heat, once the stain is out
Use with care5
- Soaking
- Chlorine bleach
- Solvents (alcohol, spot removers)
- Acids (vinegar, lemon)
- Scrubbing and abrasives
6 items
What you'll need
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- White nylon padRecommended for scrubbing grout without abrasive damage. (opens Amazon)
- Soft nylon brushAgitates the cleaner into the grout joint. (opens Amazon)
- Neutral-pH cleaner made for tile and groutA mild cleaner for yellowing that water alone doesn't lift. (opens Amazon)
- Paper towel or clothWipes up the spill before you start. (opens Amazon)
- Mop or wet vacuumPicks up the dirty solution before it dries. (opens Amazon)
- Clean waterRinses the grout so no cleaner film is left behind.
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5 steps
Step by step
Step 1 of 5
Wipe up the spill
Wipe up any spill right away with a paper towel or cloth. Lift loose residue off the grout first, so the cleaner reaches the grout itself.
Step 2 of 5
Test the cleaner first
Choose a small, hidden spot in the grout line, such as a corner, and test your cleaner there. Let it dry and check the result before you treat the whole area.
Step 3 of 51 minute
Scrub with warm water
Wet the grout with warm water and scrub it with a white nylon pad for at least 60 seconds. This lifts surface yellowing before any cleaner goes on.
Careful. Stick to white nylon pads. Abrasive cleaners and pads can damage grout and reduce sealer stain repellency.
Step 4 of 5A few minutes
Apply the neutral cleaner
Apply a mild, neutral-pH cleaner made for tile and grout and let it sit for a few minutes without drying. Agitate the grout with a soft nylon brush or pad so the cleaner reaches into the joint.
Careful. Keep the cleaner wet on the grout. Don't let it dry on the surface.
Step 5 of 5
Rinse and let it dry
Pick up the dirty solution with a mop or wet vacuum before it dries. Rinse the area with clean water and let it dry completely.
Careful. Don't leave cleaner residue, because even good cleaners leave a sticky soap film if not rinsed.
If you'd rather buy than mix
Best products for yellow stains on grout
Buy a neutral-pH cleaner labeled for tile and grout for routine cleaning, and an alkaline one for greasy soil. Check the label for whether it suits cement or epoxy grout before you buy.
Zep Grout Cleaner & Brightener
How we picked these: each product is made for this type of stain, its maker doesn't warn against using it on grout, and its directions fit the steps above.
Finished the steps? How does it look?
Nice work. Let it dry completely and check it again in good light. Here is what done looks like:
How to tell it's really gone →A faint mark usually needs one more round, not a stronger product.
Heavy buildup usually takes more than one round.
Heavy or long-standing buildup →When to call a professional →How to tell it's working
The yellow should lighten as you scrub, and the rinse water should run clear. Judge the result only once the grout is fully dry, since wet grout looks darker than it really is.
What changes for yours
Adjust for your grout
Yellow in Shower Grout
Shower grout stays wet and collects soap film and body oil, so the yellow is often greasy soil mixed with soap residue. Start with the same scrub-then-neutral-cleaner routine described above.
If the grout stays dull or feels greasy, use the alkaline cleaner for greasy soil from the stronger treatment below, and work one small section at a time so the cleaner never dries. If the yellow is actually on the glass doors, the Showers & Glass Doors guide covers that surface.
Epoxy Grout
Epoxy grout is the more forgiving type, and it can take hot water. You can damp-mop it with clean hot water and rinse with hot water when the yellow is light.
The bleaching cleanser in the stronger treatment is only for this type, and only at the end. Once it's rinsed, let the grout dry fully before you judge the color.
Cement Grout
Cement grout is porous, so yellow that dries into it takes more passes to lift. Expect to repeat the scrub and neutral-cleaner routine rather than switch to a harsher product.
If the color barely changes after two rounds, the stronger alkaline treatment is the next step, and steam comes after that. Keep the cleaner wet during every pass.
Grout Beside Stainless Fixtures
Grout that sits next to stainless partitions or fixtures needs extra care, since chlorine cleansers can damage the metal finish. Keep bleach-containing products and chlorine cleansers off the stainless and use the neutral cleaner on the grout instead.
Wipe any splashes off the stainless right away and rinse the area with clean water. Then let it dry before checking the grout.
Heavy or long-standing buildup
Old yellowing that survives the basic steps usually needs a stronger treatment. Dampen the grout, apply the alkaline cleaner made for tile and grout, and let it dwell 3 to 4 minutes without drying. Then scrub with a white nylon pad for at least 60 seconds, rinse with clean water, and repeat if needed.
Stains that have dried into cement grout become part of the grout itself, so they may not lift fully. Epoxy grout can be cleaned back to its original color more readily. Pressurized steam can lift some stains that resist ordinary cleaners, so try it next.
If the stain still won't come out, contact the grout maker's technical support for deep or stubborn stains. On epoxy grout only, a bleaching cleanser made for it can be used on tough soil as the very last treatment, after everything is rinsed out. Don't use that bleaching cleanser on cement grout.
Vinegar, baking soda, peroxide and more
Do home remedies work on yellow stains on grout?
Most home remedies are built for fabric or other surfaces, so only a few belong near grout. Only a few are worth using, and the rest are better left in the cabinet.
Skip5Avoid1
What makes it worse
Mistakes to avoid
Don't use acids on grout
Vinegar, lemon and strong acid solutions etch cement grout, which can lose its color or turn powdery or sandy. Acids can also dull glazed tile around it, so keep them away from the whole area.
Don't use general bathroom cleaners on sealed grout
General cleaners and ammonia-based products break down the sealer, which lowers how well the grout repels stains. Stick to the neutral and alkaline cleaners made for tile and grout.
Don't use oil- or wax-based cleaners
They leave a film in the grout, which is the opposite of what you want. Stick with cleaners that rinse clean.
Don't mix bleach with other cleaners
Chlorine bleach mixed with ammonia forms a toxic gas, and it shouldn't be mixed with vinegar or any other cleaner either. If bleach is used at all, it's only on epoxy grout as the final step.
When to call a professional
If the yellow survives everything above, a professional grout cleaner can assess it and tell you whether the stain is set into the grout itself. Grout makers' technical support teams can also recommend a product for your specific grout type.
Questions
Why does grout turn yellow?
Grout usually picks up yellow from residues that build up over time, such as greasy soil and soap film. The steps above are designed to lift those residues without damaging the grout.
Can I use vinegar on yellow grout?
Not on cement grout. Vinegar is an acid, and acids etch cement-based grout. Use the neutral cleaner made for tile and grout instead.
Can I use bleach on grout?
Only on epoxy grout, and only as the last step after everything is rinsed out. Cement grout should never get a bleaching cleanser.
Should I try steam on stubborn grout?
Yes, pressurized steam can remove some stains that resist ordinary cleaners. If the stain still won't come out, contact the grout maker's technical support.
How long should cleaner sit on grout?
The neutral cleaner needs only a few minutes, and the alkaline cleaner for greasy soil needs 3 to 4 minutes. Keep the grout damp during that time and never let the cleaner dry on the surface.
Can I use an oil or wax cleaner to make grout shine?
No, and it's a poor trade. Oil- and wax-based cleaners leave a film in the grout that you then have to remove. Stick with a neutral or alkaline cleaner made for tile and grout, rinse it fully, and let the grout dry before judging the shine.
Will yellow grout come out completely?
Many stains lift with the steps, but stains that have dried into cement grout may not lift fully. Epoxy grout can be cleaned back to its original color.
Yellow Stains on other materials
Other stains on grout
Start from the bigger picture
How we know this
Every method, amount and warning here comes from university extension services, industry bodies and product makers. We read them, check every step for unsafe combinations and changed amounts, and write it up so you can follow it.