If you suffer from blackening or darkening of the skin of the hands and feet, you should try this simple and proven recipe for whitening the hands and feet.
For feet that are whiter and soft as silk

Ingredients: lemon juice + potato juice + an amount of cornstarch
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Method of preparation: dear, mix equal amounts of the ingredients in a bottle, then rub your hands and feet with the mixture and massage, wait for an hour, then rinse the mixture with warm water.