Short answer
Chain grease is oil-based, so a degreaser works better than plain detergent. Dish soap is a widely used first choice: work it into the stain, let it sit, rinse, and wash as usual. Check the garment before using the dryer, since heat can set any remaining stain.
What you need
- Liquid dish soap
- An old, soft toothbrush (optional)
- A piece of cardboard or a folded towel
- Your usual laundry detergent
Step by step
- Act soon. Fresh grease is easier to treat, though older stains can often still be improved.
- Protect the other side. Slip cardboard or a towel under the stained area so grease does not transfer through the fabric.
- Apply dish soap. Work a small amount directly into the stain with your fingers, or gently with the toothbrush.
- Let it sit. Roughly 15 to 30 minutes is commonly suggested; stubborn stains may be left longer.
- Rinse. Run water through the back of the stain so grease is pushed out rather than deeper in.
- Wash as usual. Use your regular detergent and the temperature the care label allows.
- Check before drying. If a mark remains, repeat. Air dry in the meantime.
Old or set-in stains
For stains that have dried or already been washed, repeat the steps above, giving the soap more time. Some people dab a little cooking oil on dark old marks first to loosen the residue, then follow with dish soap. A paste of baking soda and dish soap is another common suggestion. Test any of these on a hidden spot first.
Does dish soap work? What about WD-40?
Dish soap is designed to cut grease, which is why it is so often recommended for this. WD-40 is sometimes used on grease stains, but it is a solvent and may not suit every fabric. If you try it, use only a little, follow it with dish soap, and test first. A gentler product is generally the safer pick.
Delicate and technical fabrics
Cycling kit often uses stretchy synthetics, and some garments have special finishes. Check the care label, avoid harsh scrubbing, and use the mildest option that works. If the item is expensive or delicate, consider asking a professional cleaner and mention that it is an oil stain.
Getting grease off your skin
For the chain mark on your leg, soap and water usually work, and a little dish soap or hand degreaser may help.
Preventing chain marks
- Wipe off excess lube after applying it; see how often to lube a bike chain for a wiped-down application.
- Use a trouser strap or roll up your pant leg.
- Clean a very dirty chain, as covered in cleaning a chain with WD-40 or a degreaser.