Step 1: Test a small inconspicuous part of the material to check that it is colour-fast.
Step 2: Dissolve HG stain away no.1 in one litre of hot water.
Step 3: Immerse the stain and allow the product to work for about 30 minutes.
Step 4: Rinse out well in hot water.
For stubborn stains, further dilute the solution to 4 litres and allow the product to work on the stain for several hours.