Checked elsewhere / 台灣事實查核中心

“網傳「每天睡前吃一點它(桑葚、核桃),不出一周白髮不見了」,經查:人的毛髮中有黑色素細胞生成黑色素,讓毛髮呈現黑色。黑色素細胞會隨著年紀、壓力等因素,導致自由基堆積,影響到黑色素生成,產生白頭髮。中醫理論中桑葚、核桃屬於能滋補肝腎的食材,有助延緩老化,但無法達成傳言指稱「一周內白髮不見了」的功效。白頭髮和洗頭髮的步驟無關。此傳言為「部分錯誤」。”
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台灣事實查核中心 rated this部分錯誤

In short

This claim spread on social media. 台灣事實查核中心 (Taiwan) looked into it and published its finding on 10 December 2019. Its rating was “部分錯誤”.

This check was done by 台灣事實查核中心, not by DoesItStand. We list it so you can find it. Their full evidence and reasoning are in their article.