Mix 1/4 scoop of powder with 3/4 scoop of water (max 40°C) into a paste.
Gently rub stain as required using the knobbly base of the scoop.
Leave paste on the stain for 5/10 minutes max.
Wash as usual with your detergent and add another scoop of Vanish.
Take a clean, damp paper towel or cloth and dab the ink until you have removed as much as possible.