First few minutes
Just happened? Do this first
- Scrape off solid or semi-solid grease with a rounded spoon or dull knife before adding any liquid.
- Dust talcum powder on the spot to soak up as much grease as it will take, then brush it off.
- Blot liquids with a clean white cloth; don't rub.
- Keep the item away from the dryer, iron and hot air until the stain is gone.
Grease on polyester is thickened oil, and plain water won't lift it on its own. Old grease is noticeably harder than fresh, and once the spot has been through a dryer, removal may not be possible at all. Keep heat away from it, since polyester can't take hot water.
On a polyester shirt or jacket, a prewash stain remover spray or stick is the easiest way to start. Sheer and white polyester needs a gentler hand, so test the pretreater on a seam first. For old grease stains on polyester tablecloths or sheets, an enzyme laundry pretreater with a little patience works best.
Before you start
What polyester & synthetics can take
Safe to use2
- Water
- Soaking
Use with care6
- Chlorine bleach
- Oxygen bleach
- Enzyme cleaners
- Solvents (alcohol, spot removers)
- Acids (vinegar, lemon)
- Scrubbing and abrasives
Avoid2
- Hot water
- Heat, once the stain is out
9 items
What you'll need
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- Talcum powderSoaks up the grease before any liquid touches it. (opens Amazon)
- Rounded spoon or dull knifeLifts off solid grease without spreading it.
- Commercial pre-wash spotBreaks down the grease before the wash. (opens Amazon)
- Stain remover (opens Amazon)
- Heavy-duty liquid detergentCleans the oil out during a normal warm wash. (opens Amazon)
- Mild liquid hand dishwashing detergentWorks on the spot once it has dried. (opens Amazon)
- AmmoniaA few drops go into the dish detergent solution. (opens Amazon)
- All-fabric (oxygen) bleachRemoves the final traces after everything is rinsed. (opens Amazon)
- Clean white cloth or paper towelsBlots liquid without spreading the stain. (opens Amazon)
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7 steps
Step by step
Step 1 of 7
Lift off solids and absorb grease
Use a rounded spoon or dull knife to lift off any solid or semi-solid grease, and don't add liquid yet. Dust talcum powder over the spot to draw out as much grease as it will take, then brush it off thoroughly.
Tip. Work from the edges toward the center so the grease doesn't spread.
Careful. Check the care label before any method and skip anything it prohibits.
Step 2 of 7
Pretreat with a spot remover
Work a commercial pre-wash spot and stain remover into the grease, following the product's directions. Let the remover sit on the spot so it can start breaking down the oil before the wash.
Step 3 of 7
Wash in warm water
Launder the item in warm water, not hot, with heavy-duty liquid detergent for a normal load. Check the spot as soon as the wash finishes, before the item goes anywhere near heat.
Careful. Hot water and heat shrink and melt polyester.
Step 4 of 7
Flush and repeat if the stain stays
If the stain is still there after the wash, flush it with a commercial cleaner until no more stain comes out. Repeat the pre-wash treatment if the spot is still visible.
Careful. Rubbing spreads the stain and can damage the fibers, so blot and press instead.
Step 5 of 7
Let dry, then apply diluted detergent
Let the spot dry completely with no heat, then sponge it with water. Mix 1 teaspoon of mild liquid hand dishwashing detergent with 1 cup of warm water, work it into the spot, and add a few drops of ammonia.
Step 6 of 7
Keep rinsing and repeating
Keep working the spot while the stain is still coming out, flushing with water between rounds. When the stain stops lifting, stop repeating the step.
Step 7 of 7
Finish with oxygen bleach
Once everything is fully rinsed out, use an all-fabric (oxygen) bleach on the last traces of the stain. Then wash the item as usual on the same warm setting.
Careful. Test it on an inconspicuous area first, because colors can change.
If you'd rather buy than mix
Best products for grease on polyester & synthetics
Pick a pre-wash spot and stain remover, a heavy-duty liquid detergent, and an all-fabric (oxygen) bleach for the last step. Oxygen bleach is less damaging to colors and fabrics than chlorine, so it's the one to reach for on polyester.
Puracy Laundry Stain Remover
ECOS OXO Brite Stain & Odor Remover Pre-Wash Spray
How we picked these: each product is made for this type of stain, its maker doesn't warn against using it on polyester & synthetics, 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 before using any heat. 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.
See what to do for what you're seeing →If the stain was already dried or set, the method changes.
Old, dried or set-in stains →When to call a professional →How to tell it's working
You're making progress when the spot gets lighter after each round of detergent and rinsing. If it stops lightening, stop repeating that step and move on to the next one.
What changes for yours
Adjust for your polyester & synthetics
Polyester shirts, jackets, dresses, and pants
Shirts, dresses, and pants follow the steps as written, with warm water and no dryer until the spot is gone. Jackets need more care: take dry-clean-only coats to a dry cleaner promptly, but a synthetic insulated jacket should never be dry-cleaned.
Never iron an insulated jacket, and skip fabric softener on it, since softener coats the fill and reduces warmth. Spot treatment with the steps above is the safest route for these at home.
Sheer, white, and all-polyester fabric
Sheer polyester needs a lighter touch, so work the spot by blotting instead of scrubbing. White polyester can take the bleach step at the end, as long as the item is fully rinsed first.
Chlorine bleach is listed as safe for polyester but not for spandex, so skip it on any stretch blend. If you do bleach, keep it to the last step only.
Polyester tablecloths, napkins, and sheets
Napkins and sheets follow the steps as written, with warm water as the limit for every piece. A tablecloth is bulky, so lay it flat on a white towel and work the spot before washing it.
Take a bulky tablecloth to a dry cleaner if the spot survives the wash, and point out the grease when you drop it off. A sheet with a stain that large is worth the same call.
Polyester
Polyester is a synthetic that shrinks and melts at high temperatures, so heat is the main thing that changes the approach. Every polyester item here gets warm water at most and no dryer until the stain is gone.
Grease that has been dried or ironed in is the hard case, so treat the spot before any heat reaches it. If the item has already been through a dryer, move to the set-in section.
Old, dried or set-in stains
Old grease is harder to remove than fresh grease, so a stain you noticed days ago will take more passes than one from today. Start with the steps above, and don't stop after the first pass if the spot still shows oil.
Oil that has dried into polyester is much harder to lift, and after a trip through the dryer, removal may be impossible. Oil stains can seem gone and then reappear, so don't dry the item until nothing more comes out.
For a stain that's still there, dab dry-cleaning solvent onto the spot with a white cloth, blot, and repeat until no more stain comes out. Work in a well-ventilated room with no flames, pilot lights or sparks nearby, because solvent is flammable. If the stain is still visible after that, take the item to a dry cleaner and point out the grease.
Vinegar, baking soda, peroxide and more
Do home remedies work on grease on polyester & synthetics?
Black or car grease gets asked about most, and it follows the same steps as any grease on polyester. Most home remedies are built for other stains or fabrics, so only a few suit grease on polyester.
Works2Helps1Skip3
Chemical safety
Never mix these
Some products in this guide react dangerously with each other. Use them one at a time and rinse with water in between.
Chlorine bleach + Oxygen bleach (OxiClean)
Both makers advise against combining them: OxiClean says not to mix it with chlorine bleach, and Clorox says the two bleaches cancel each other out.
Ammonia + Chlorine bleach
Bleach mixed with ammonia releases toxic chloramine gas.
Ammonia + Baking soda
The ammonia maker's safety sheet says not to mix ammonia with other household chemicals, and Poison Control warns against mixing ammonia products with other cleaners.
Baking soda + Oxygen bleach (OxiClean)
OxiClean's label says not to mix it with other household chemicals.
If they mix by accident: Stop and add nothing else; leave the area for fresh air, open windows and keep children and pets away; call Poison Control at 1-800-222-1222, or 911 if anyone has trouble breathing.
What makes it worse
Mistakes to avoid
Don't dry or iron it until the stain is gone
Heat sets oil stains, and a dryer or iron can make the grease impossible to remove. Let the item air-dry only after the spot has been treated and nothing more comes out.
Don't use gasoline or lighter fluid
Neither is a safe grease remover, and both are flammable. Stick to products that are safe for polyester.
Don't mix ammonia with chlorine bleach
Mixing chlorine bleach with ammonia, vinegar or rubbing alcohol can give off toxic fumes. Rinse each product out with plain water before you move to the next one.
Don't use solvent near a flame
Dry-cleaning solvent is flammable, so use it only in a well-ventilated room with no flames, pilot lights or sparks nearby. Let it evaporate before you wash or dry the item.
Troubleshooting
If the stain is still there
Pick what you're seeing:
The stain is still there after washing
A second treatment may be necessary. Repeat the pre-wash spot remover and the warm wash with heavy-duty liquid detergent, and keep the item out of the dryer until the spot is gone.
A ring or residue is left after the solvent
Flush the area with a commercial cleaner until no more stain is removed, then let the solvent evaporate completely before washing or drying.
The spot fades after drying but doesn't disappear
Some grease is still in the fiber. Old grease is harder to remove than fresh, so go back to the talcum powder and pre-wash treatment rather than washing warmer.
When to call a professional
Take dry-clean-only coats and jackets to a dry cleaner promptly, and name the stain and fiber when you drop them off. Take washable items to a dry cleaner if the stain is large, the item is bulky, or the fabric is fragile. Leave synthetic insulated jackets out of dry cleaning.
Questions
Can I put a greasy polyester shirt in the dryer to check it?
No. Machine-drying a synthetic with oil still in it can make removal extremely difficult, if not impossible. Check the spot by eye after the wash, and dry the item only once the stain is gone.
What water temperature is safe for polyester?
Warm water is the most you should use. Polyester shrinks and melts at high temperatures, so a warm wash keeps the fabric safe while the detergent works on the oil.
Can I use dry-cleaning solvent on polyester?
Yes, for a stubborn spot, but use it carefully. Dab it onto the spot with a white cloth, and do it in a well-ventilated room away from flames.
Can I bleach white polyester?
Yes, but carefully. Use an all-fabric oxygen bleach as the last step, after a colorfast test and a full rinse. Chlorine bleach is listed as safe for polyester but not for spandex.
Will a grease stain come out after the item has been washed?
It can, if the item hasn't been dried. Once it has been through the dryer, removal may be impossible, so keep working the spot with the steps above first.
Does car grease need a different method?
The same steps work for car grease, and the mild dish detergent is the part that breaks the oil down. Keep it away from heat until the spot is gone.
Can I use rubbing alcohol on a polyester stain?
No, though if you try it, test a hidden seam first, since it can harm colored fabric with untested dyes. It can harm colored fabric with untested dyes, so test a hidden seam first if you decide to try it.
Grease on other materials
Other stains on polyester & synthetics
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.