Start by blotting the stain with a dry cloth. Then, gently work a small amount of dish soap into the spot with a sponge, let it soak, and rinse it under cold or warm water.
If the stain persists, lay your garment flat, with the stained face upward. Lightly pour H2O2 onto the stain and sprinkle baking soda over the moistened section.
Once the mixture starts fizzing, gently scrub the stain with a toothbrush. Let it sit for 30 to 60 minutes, then send your garment through a regular washing cycle.
Avoid risky combinations like hydrogen peroxide and vinegar or bleach. For oil stain removal, consider alternatives like cornstarch, white vinegar, or lemon juice.