Procedure
Pour the water into a large pot.
Add oil, percarbonate, soap and salt.
Mix well and immerse the clothes.
Place the pot on the stove and bring to the boil.
Then turn off the heat and leave the items in water for 30 minutes.
Rinse with cold water and wring out the clothes well.
Let them dry and you will see that they will be as good as new.
Cold milk
Another effective remedy for whitening laundry is cold milk. To use it, all you have to do is pour it into a basin with water (in a 1:1 ratio) and leave the affected items to soak in this solution for at least one night. Afterwards, in the case of stubborn stains, you can rub the area with a brush before proceeding with a normal washing cycle in the washing machine.

Bicarbonate
Bicarbonate is a natural ingredient known for its whitening properties. For laundry, you can add a teaspoon directly to the washing machine tray (where you would normally put powdered detergent) or prepare a soak by diluting it in water. Your clothes will be white and as good as new in no time!