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You can find liquid glycerin at your local drugstore or pharmacy. Dab it onto the stained garment so the entire stain is covered, and let it set. Mix the detergent and water together in the bowl. Gently rub the surface of the stain using the cotton swab to help the detergent mixture lather. Check to see if the stain is gone after the garment is finished washing. If the stain is still there, repeat the process.
Get a bottle of pure, liquid glycerin. Apply the glycerin to the ink stain using a cotton swab. Add a few drops of laundry detergent to a bowl of water. Apply the detergent mixture to the stain using a cotton swab. Machine wash the stained garment with cold water.