Blot the stain to prevent any excess color from seeping into the fabric. Put pretreatment solution on the stain, let it sit for 10 to 15 minutes and wash it out.
If the stain is still in the garment, mix laundry detergent and water and rub it on the stain. Rinse the area, and then repeat this process until the stain comes out. If the stain remains, blot the spot with rubbing alcohol and a clean towel. Soak the garment in salt water for a couple of hours, and then wash the garment as usual. Let it air dry outside, as the sunlight may remove any remnants of the stain.