How do you remove set-in oil stains?
Set-in oil stains can be removed using a few different strategies such as soaking the garment or applying hydrogen peroxide followed by baking soda.
Begin by blotting the oil and removing any excess. Apply dish soap to the stain and rub it in until the stain is covered. Let it sit for at least ten minutes and then soak the garment in warm water for at least 30 minutes. Be sure to rinse the dish soap out completely before putting the garment in the washing machine. Line dry the garment.
If that process does not work to lift the stain, wet the area and cover it with baking soda. Scrub it lightly with a toothbrush and then wash your garment as usual in the warmest water recommended on the item’s care tag. Line dry the garment.