How to Remove Set-In Grease from a Polyester Couch

Set-in grease on a polyester couch can be a stubborn problem. The longer it sits, the harder it is to remove. But with the right method, you can lift that oily spot without damaging the fabric. This guide focuses on set-in grease on polyester upholstery, using common household items.

Why Set-In Grease Is Tricky

Grease is oil-based, and once it dries, it can bond with the polyester fibers. Polyester is a synthetic fabric that is somewhat resistant to water, so water alone won't break down the grease. You need a degreasing agent, like dish soap, and an absorbent, like baking soda, to draw the oil out.

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What You'll Need

• Dish soap (preferably a degreasing formula)
• Baking soda
• Warm water
• Clean white cloths or paper towels
• Soft-bristled brush (optional)
• Vacuum with upholstery attachment

Step-by-Step Removal Method

1. Blot up any excess grease. If the stain is still fresh, use a clean cloth to blot (don't rub) and absorb as much oil as possible. For set-in grease, skip this step.
2. Apply baking soda. Sprinkle a generous layer of baking soda over the entire grease stain. Let it sit for at least 15 minutes to absorb the oil. For set-in stains, you can leave it for up to an hour.
3. Vacuum the baking soda. Use a vacuum with an upholstery attachment to remove the baking soda. This lifts the absorbed grease.
4. Mix a cleaning solution. In a small bowl, mix 1 tablespoon of dish soap with 2 cups of warm water. Stir gently to combine.
5. Test on a hidden area. Before applying to the stain, test the solution on an inconspicuous spot of the couch to ensure it doesn't cause discoloration or damage.
6. Apply the solution. Dip a clean white cloth into the soapy water, wring it out so it's damp but not dripping, and gently blot the grease stain. Work from the outside edges toward the center to prevent spreading.
7. Blot with a dry cloth. Use a dry cloth to blot the area and absorb the soapy solution. Repeat steps 6 and 7 until the stain lifts.
8. Rinse the area. Dampen another cloth with plain water and blot the area to remove any soap residue. Then blot dry with a clean cloth.
9. Let it air dry. Allow the couch to dry completely. Avoid using heat, as it can set any remaining grease.