SAEDNEWS: Most people do not notice their hands turning black while peeling walnuts, and only after their hands have become stained do they start looking for a way to remove the walnut stains.
According to SAEDNEWS, The fresh walnut skin causes the hands to turn black upon contact, and these stains do not disappear even after washing with hand soap. If your hands have also become black due to peeling walnuts, the solutions provided in this section can help remove the stains from your skin.
Fresh walnut skin has strong dyeing properties due to the acidic compounds present in it. When walnut skin comes into contact with human skin and oxygen, it creates deep brown stains that are not easily removed. This strong coloring ability of walnut skin has led to its traditional use as a natural dye for coloring hair, as well as for dyeing yarns and fibers. This natural dye is durable, long-lasting, and highly stable.

Removing black walnut stains with walnut leaves
If your hands have turned black from contact with walnut skin, you can rub fresh walnut tree leaves directly on the stained areas, then wash your hands. Repeat this process several times until you see the desired result.
Removing black walnut stains with vinegar
To reduce the dark stains caused by walnuts, mix half a cup of vinegar with half a cup of water and wash your hands with this solution.
Removing black walnut stains with toothpaste
One effective way to remove black walnut stains from the skin is to apply whitening or stain-removing toothpaste onto an old toothbrush and rub it firmly over the stained areas of your hands until the dark marks fade and disappear.
Removing black walnut stains with salt and lemon juice
To clean walnut stains from the skin, mix half a cup of lemon juice with one tablespoon of salt and wash your hands with this mixture.
Removing black walnut stains with exfoliating cream
You can also use exfoliating creams to remove black walnut stains from your skin and help fade the remaining discoloration on your hands.