Olive oil off the salad spoon, butter from the toast knife, a greasy handprint down a school polo. Oil stains look harmless when they happen and come back as a grey shadow after the wash. That is chemistry, not bad luck: as Paul E. Richardson, Professor of Biochemistry at Coastal Carolina University, explains, oil is hydrophobic — it repels water — so water on its own, hot or cold, will not lift it off the fibre.
Oil is also one of the more forgiving stains once you work in the right order. For other spills, start with our guide to the 10 most common clothing stains.
Quick Answer: Scrape off the excess, cover the stain with bicarb soda or cornflour for 15–30 minutes and brush it away, then work a few drops of dishwashing liquid into the mark and leave it for 10–15 minutes. Wash at the warmest temperature the care label allows and air dry — never tumble dry or iron until the stain is gone, because heat sets it. Old or dryer-dried stains usually need the same cycle repeated with a longer dwell, then an oxygen-bleach soak for the shadow that's left.
Why Oil Stains Survive a Normal Wash
A washing machine is mostly water, and water cannot lift oil. What does the work is the surfactant in detergent. Richardson describes each molecule as having a water-loving head and an oil-loving tail: the tails bury themselves in the oil, the heads face outward, and the oil ends up wrapped in a tiny sphere — a micelle — that rinses away. Rubbing forces surfactant into grime, he adds — so work the pre-treatment in rather than dabbing it on.
In a full drum that detergent is spread thin, and a cold cycle gives it little help. A drop of dishwashing liquid rubbed into the stain is concentrated surfactant exactly where it is needed — the degreaser professional cleaners use on fabric and benchtops alike.
The no-heat rule (and why you check before the dryer)
The New Mexico State University Cooperative Extension puts it in three words: heat sets stains. No iron and no dryer until you are sure the stain is gone. A wet oil mark can look as though it has vanished, so the check happens after air drying, in daylight.
What You'll Need
Bicarb soda (bicarbonate of soda) or cornflour — unscented talc works too
Dishwashing liquid — Morning Fresh or any decent brand; a clear or pale one for whites, since a dyed liquid left to dwell can tint pale fabric
An old toothbrush, paper towel and a spoon
An oxygen-bleach soaker (Sard, Vanish Napisan or Aldi Di-San) for old stains
Cling wrap to keep a long pre-treatment damp
Optional, sturdy cotton and denim only: WD-40 or eucalyptus oil, with the safety notes below
The basics are a few dollars at Coles or Woolworths, and most are already in the kitchen.
How to Get a Fresh Oil Stain Out of Clothes (the 30-Minute Method)
This is the order professional cleaners work in: scrape, absorb, surfactant, wash, air dry and check.
Step 1: Scrape and blot — don't rinse yet
Lift any solid fat off with the edge of a spoon, then press a folded paper towel onto the mark. Blot, don't rub, and keep it away from the tap: water just spreads oil.
Step 2: Smother it with bicarb soda or cornflour
Cover the stain with a thick layer of bicarb or cornflour and press it in. The University of Georgia Cooperative Extension starts grease removal the same way: an absorbent powder to soak up as much grease as possible, then a thorough brush-off. The powder is pulling oil out of the fibre before anything else touches it. Leave it 15–30 minutes, longer for a heavy splash, then brush it off outside. Keep the bicarb dry — it is working as an absorbent, not a chemical.
Step 3: Break it with dishwashing liquid
Put two or three drops on the stain and work them in with your fingertips or the toothbrush, from the outside edge inward. Leave it 10–15 minutes.
Step 4: Wash at the care-label temperature
Wash straight away with a full dose of normal laundry detergent, at the warmest temperature the care label allows.
Step 5: Air dry and check before any heat
Hang it on the line or an airer, let it dry completely, then look at the stain in daylight. Uniform fabric means you are done; a shadow means you repeat from Step 3 with a longer dwell. Only then does the garment see a dryer or an iron.
Let the Care Label Decide the Water Temperature
The symbol that matters is the washtub: Product Safety Australia's care-labelling guide confirms the number inside it is the maximum washing temperature in degrees Celsius. Go above it and you trade a stain for shrinkage, dye loss or, on wool, felting.
Label temperature | Typical fabrics | What it means for an oil stain |
|---|---|---|
30°C | Synthetics, activewear, delicates, dark colours | Rely on the pre-treatment; the wash is only a rinse |
40°C | Most cotton colours, denim, polycotton | The sweet spot — warm enough to help the surfactant, safe for everyday clothes |
60°C | Cotton whites, tea towels, aprons | Only if the label allows and the stain is already pre-treated |
Tea towels, aprons and oven mitts are the everyday oil carriers in a kitchen; a weekly 60°C cotton wash with a full detergent dose is what stops them greying. For the principle behind warm versus cold washing, see what water temperature actually cleans better.
How to Get Old, Set-In or Dryer-Dried Oil Stains Out
The NMSU Extension is blunt that set-in stains are harder to remove, and a stain that has been through a hot dryer is the hardest of all. Most washed-but-not-dried stains still come out; dryer-set stains sometimes do.
Repeat the dishwashing-liquid step with a longer dwell
Dampen the stain, work in dishwashing liquid as in Step 3, cover it with cling wrap so it stays wet, and leave it for an hour — overnight for a stain that has been there for weeks. Wash at the label temperature and air dry. Repeating this cycle is what shifts most old oil stains.
Oxygen-bleach soak for the shadow that's left
The oxygen bleach itself does not dissolve oil — the dishwashing liquid before it and the soaker's own detergent ingredients do that work — but it lifts the discolouration left once most of the grease is out. Dissolve a soaker in warm water following the pack, no hotter than the care label allows, and soak for at least the pack's minimum time. Check the pack's fabric exclusions for wool, silk and viscose, and colour-test an inside seam first.
WD-40 and eucalyptus oil: what they can and can't do
Both can loosen dried grease that dishwashing liquid alone won't move, and both are oils themselves, so each leaves a mark that must then be washed out. Last step only, sturdy cotton or denim only, never on children's clothes.
WD-40. The manufacturer's Safety Data Sheet lists petroleum base oil and aliphatic hydrocarbons as the main ingredients — a thin oil in a can. Spray a little onto a cloth, dab the stain, let it evaporate, then work dishwashing liquid through the spot and wash at the label temperature.
⚠️ Safety note: The manufacturer's Safety Data Sheet classifies WD-40 aerosol as DANGER: extremely flammable, may be fatal if swallowed and enters airways, may cause drowsiness or dizziness. Use it outdoors or with windows open, away from cooktops and heaters; store it locked away from children; never put a garment still wet with solvent into a washing machine, and no dryer or iron until it has been fully washed. Poisons Information Centre: 13 11 26. — WD-40 Company Safety Data Sheet
Eucalyptus oil. The classic Australian remedy for greasy collars. We could find no independent test of how well it shifts cooking or motor oil, so treat it as a solvent that may help rather than a fix. Put a few drops on a cloth, dab from the outside of the mark inward, let it evaporate, then dishwashing liquid and a label-temperature wash — it is itself an oil, so whatever it loosens still has to be washed out. It does the same loosening job on gum, as our chewing gum guide explains.
⚠️ Safety note: Eucalyptus oil is the essential oil most often involved in poisoning, according to Austin Health's toxicology service, and any exposure over 5 mL can lead to toxicity; in children it can cause seizures and profound drowsiness, often within 30 minutes. Use a few drops, cap the bottle, store it locked and high, and call 13 11 26 if a child swallows any. — Austin Health Clinical Toxicology Service
Never use petrol, brake cleaner or other fuels on clothing.
When to call it (or call a dry cleaner)
Anything dry-clean-only, and set-in oil on silk or structured wool, goes to a dry cleaner the first time — tell them what the stain is and how old it is. On everything else, three full rounds is the honest limit; a shadow that survives that is part of the garment now.
Oil Stains by Fabric: What Changes
Polyester and other synthetics tend to hold oil in the fibre, while cotton and linen release it more easily. The care label settles the temperature; the table settles the method.
Fabric | Best method | Wash temperature | Avoid |
|---|---|---|---|
Cotton and linen | Absorbent, dishwashing liquid, warm wash; oxygen bleach for shadows | Up to the label, often 40–60°C | Chlorine bleach on colours |
Polyester, nylon and blends | Absorbent, dishwashing liquid with a long dwell; repeat before any heat | 30–40°C | The dryer until the stain is gone |
Denim | Absorbent, dishwashing liquid, inside-out wash; WD-40 only as a last resort | 30–40°C | Hot water on dark denim |
Activewear (polyester/elastane) | Absorbent, dishwashing liquid, cool wash | 30°C | Fabric softener (it leaves a residue on the fibres), chlorine bleach, tumble dryer |
Wool and merino | Scrape, absorb, solvent that evaporates fully, then a wool wash | Cool, per label | Hot water, rubbing, any bleach |
Silk and viscose | Blot and absorb only, then follow the label | Dry cleaner if it says dry-clean only, otherwise a cool hand wash | Dishwashing liquid, WD-40, rubbing |
Wool and merino: solvent first, never hot water
Wool is the one fabric where the order changes. The Woolmark Company advises scraping the excess off with a spoon or blunt knife, then pressing a hot iron over several layers of tissue so the tissue, not the fibre, takes the oil — the one exception to the no-heat rule, because the heat is driving oil into an absorbent, not baking a wet stain into the garment. Then dab the mark with a lint-free cloth soaked in a proprietary grease remover or white spirit. Solvents must evaporate completely before any water goes near the fibre, and a water-based treatment not fully rinsed out before drying leaves a coloured ring.
Activewear and elastane: keep it cool
Absorbent and dishwashing liquid are fine on activewear; what it cannot take is heat and softener. Nike's Australian care guide says to wash workout clothes in cold water on the gentle cycle, and that fabric softener leaves a residue on the fibres. Air dry.
Oil Stains by Source: Cooking Oil, Sunscreen, Motor Oil and More
Every oil stain is a fat that water won't touch, but the extras in it change the follow-up.
Stain | What's in it | Do this first | Then | Watch out for |
|---|---|---|---|---|
Cooking oil, olive oil, fat splatter | Pure fat | Scrape, blot, bicarb or cornflour | Dishwashing liquid, warm wash, air dry | Treat both sides — oil soaks through |
Butter, margarine, mayonnaise, dressing | Fat plus egg, dairy or vinegar | Scrape the solids, absorb | Dishwashing liquid, then a warm wash — start cool on the egg or dairy, since heat can set proteins | Rubbing spreads the fat |
Sunscreen | Oil plus UV filters | Cornflour or talc, brushed off | Dishwashing liquid, warm wash | Yellow marks are a different stain; an oxygen-bleach soak may lift them |
Motor oil, engine oil, chain grease | Dirty petroleum oil | Absorbent powder, worked in and brushed off | Dishwashing liquid, long dwell, hottest safe wash, oxygen-bleach soak | Wash separately; no fuel or brake cleaner |
Lip oil, lipstick, foundation | Oil plus pigment | Scrape, blot | Dishwashing liquid, wash, oxygen bleach for leftover colour | Rubbing drives pigment in |
Oil on the couch or the carpet is a different job with different fabric limits — use our couch stain guide and carpet stain guide for those.
Do Shop-Bought Stain Removers Help With Oil?
They help with the shadow, not the stain: no product replaces the absorb-then-surfactant order. The most useful independent data is CHOICE's stain-remover test, updated in January 2026, which included olive oil among its test stains. Two sprays tied at the top on 78%: Aldi Di-San Pro Ultra Degreaser with Enzymes at about 28 cents per 100 ml and Sard Super Power Toughest Stains at $1.90 per 100 ml — less than a sixth of the price for the same score. Among soaker powders, Sard Super Power scored 76%, Vanish NapiSan Oxi Action Gold Pro 73% and Aldi Di-San Pro Oxy Ultra White 69%.
⚠️ Safety note: Keep stain removers, dishwashing liquid, eucalyptus oil and aerosols in a childproof locked cupboard at least 1.5 m above the ground — essential oils sit alongside cleaning products on healthdirect's list of household poisoning sources. Poisons Information Line 13 11 26, 24 hours. If a child swallows something, do not induce vomiting. — healthdirect
What Not to Do With an Oil Stain
Don't rinse it under the tap first. Water doesn't remove oil; it spreads it.
Don't apply heat before the stain is confirmed gone — no dryer, no iron, no hot rinse.
Don't add vinegar to the bicarb. As Dr Nathan Kilah, Senior Lecturer in Chemistry at the University of Tasmania, explains, the fizz is the two neutralising each other — a visual placebo.
Don't expect lemon juice or salt to help. Neither is a surfactant, so neither can lift oil.
Don't use chlorine bleach on synthetics, wool or silk, and never mix it with any other product (see below).
Don't pour dishwashing liquid into the washing machine. It goes on the stain, not in the drum.
⚠️ Safety note: Never mix chlorine bleach with vinegar, ammonia or any other cleaner — the reaction can release hazardous chlorine or chloramine fumes — and don't add it to an oxygen-bleach soak either: the two cancel each other out. Rinse a garment fully between products. — Better Health Channel, Victorian Government
Frequently Asked Questions
Q: How do you get dried oil stains out of fabric?
Dampen the stain, work dishwashing liquid in with an old toothbrush, cover it with cling wrap so it stays wet for an hour or more, then wash at the warmest temperature the care label allows and air dry. Repeat if a shadow remains, then use an oxygen-bleach soak for the last of the discolouration, and keep it out of the dryer until the mark is gone.
Q: Do oil stains eventually come out of clothes?
Not on their own — repeated ordinary washes rarely shift an oil stain, because oil repels water and the detergent in a full load is spread too thin to lift it. Treated in the right order — absorb, dishwashing liquid, label-temperature wash, air dry — most fresh and washed-but-undried oil stains come out completely; dryer-set stains are the exception.
Q: Can you get oil stains out of clothes after washing and drying?
Washed but not tumble-dried: usually yes, with the long-dwell dishwashing-liquid method and a label-temperature wash. Washed and then dried on heat: sometimes, after two or three rounds of dwell, wash and air dry followed by an oxygen-bleach soak, because the heat has set the oil into the fibre. Stop after three rounds — what is left by then is permanent.
Q: Does WD-40 remove oil stains from clothes?
It can loosen old, dried grease on sturdy cotton and denim because it is a petroleum-based solvent, but it is also an oil and leaves a residue that then has to be washed out with dishwashing liquid. Its safety data sheet classes it as an extremely flammable aerosol and an aspiration hazard, so use it outdoors, keep it off children's clothes, and let it evaporate fully before the garment goes near a machine, dryer or iron.
Q: Can lemon remove oil stains?
No. Lemon juice is an acid, and acids do not dissolve oil — only surfactants, the molecules in detergent and dishwashing liquid, can surround oil and let water carry it away. Lemon has genuine uses on mineral deposits, but on a grease mark it does nothing useful.
Q: How do you get motor oil out of clothes?
Work an absorbent powder such as bicarb, cornflour or talc into the stain and brush it off, then rub in dishwashing liquid, leave it for an hour under cling wrap, and wash separately at the hottest temperature the label allows. Follow with an oxygen-bleach soak for the dark shadow motor oil leaves behind. Never use petrol or other fuels on clothing, and if you used a solvent, let it evaporate before the garment goes near a machine.
