2. If you just dipped in walnut water, and the water stain is not dry, you can wipe a proper amount of salt on your hands, dip a small amount of water to make them wet, and then wash them with soap. If you have more walnut juice on your hands, put more salt on your hands.
3. Lemon juice contains a lot of acidic substances, which has a strong decontamination function. You can squeeze lemon into juice and put it in a basin, and soak your hands with lemon juice, so that you can remove walnut water.
4. If the walnut water stays on your hands for a long time, you can pour ammonia water and clear water into the basin and mix them into a solution at the ratio of 1:20, then put your hands in it for 3 minutes, then apply soap to your hands, and finally wash your hands with clear water, and you can find that the stains left by the walnut water are gone. This is based on the principle that ammonia can neutralize organic acids in walnuts.