For tough and dried stains: Fully dissolve 1 scoop of the Vanish Oxi Action Powder into 4 litres of warm water (max 40 °C) and leave it to soak. For lighter stains, you can use 1/2 a scoop. Colour: leave to soak for a maximum of 1 hour.
After soaking, wash as usual or rinse thoroughly.
For best results on tough stains, rub the stains out of the clothes before rinsing.