《庄子·内篇·逍遥游》
宋国有一善于调制不皲手药物的人家，世世代代以漂洗丝絮为职业。
宋人有善为不龟手之药者，世世以洴澼絖为事。
There was a family in the State of Song skilled in making medicines to prevent chapped hands and had been in the business of washing silk for generations.