If you want to remove the stains on the green walnut skin on your hands, the materials you need to prepare are edible salt, soap, grapes and water.

First, wash your hands with proper amount of edible salt. Sodium chloride in edible salt can dissolve the pigment in green walnut skin.

Second, then rub it with soapy water for a few minutes to remove it.

Third, you can also crush two grapes by hand.

Fourth, rub grapes with both hands. The fruit acid in grapes can remove the pigment from the skin of green walnut.

5. Finally, rinse with clear water.