How to Remove a Set-In Grease Stain from a Cotton Shirt

If dish soap and baking soda aren't enough, try using a commercial degreaser or a pre-treatment spray designed for laundry. Always test on an inconspicuous area first. For delicate cotton, avoid harsh chemicals like bleach, which can weaken fibers. Another option is to use a paste of baking soda and white vinegar, which can be effective for stubborn stains. Apply the paste, let it sit for 30 minutes, then rinse and wash as usual.

Repeat or Stop Conditions

If the stain hasn't lifted after three or four treatments, it may be permanent. At that point, further attempts could damage the fabric. Consider repurposing the shirt or using a fabric-safe dye to camouflage the mark. If you notice the fabric becoming thin or discolored, stop treating and accept the stain.

Drying and Reassessment

After washing, always air-dry the shirt to check if the stain is completely gone. If you dry it in a machine and the stain remains, the heat will set it permanently. Once the shirt is dry, reassess the stain under good lighting. If a faint mark remains, you can repeat the treatment process. If the stain is gone, you can safely machine dry the shirt on a low setting.

With patience and the right technique, you can often save a cotton shirt from a set-in grease stain. Remember to act quickly for fresh spills and treat set-in stains with persistence.