Rinse the stained area with cold water as soon as possible
Blot the stain gently with a clean cloth or paper towel
Apply a small amount of liquid laundry detergent or stain remover
Let it sit for 10 to 15 minutes
Gently rub the fabric against itself or with a soft brush
Rinse again with cold water
Repeat the treatment if needed
Wash the clothing in cold water
Check that the stain is gone before drying
Air-dry the clothing
Repeat the process if any stain remains
For dried blood, soak the fabric in cold water before treating
For delicate fabrics, test the cleaner on a hidden area first