You need rubbing alcohol, aerosol hairspray, a washing machine and laundry detergent to remove ink stains.
Treat the stain as soon as possible. Spray the stain with the hair spray, or apply plain rubbing alcohol. Allow the liquid to sit on the stain, but don't let it dry on the clothing.
Immediately put the article of clothing into the washer, and wash as usual with detergent. Let the garment air dry to ensure that the stain is gone.