可以利用小苏打的碱性和摩擦力来去除老茧。以下是具体步骤：
所需工具：小苏打。
1、碗里倒上水。
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2、倒入适量的小苏打。
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3、将溶液搅拌均匀。
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4、将溶液沾在老茧处，慢慢摩擦，发热为止。每天都这样做，坚持3天。
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5、3天之后，可见老茧都去除了，恢复了光滑的皮肤。
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注意事项：干体力活时，可戴一副手套，可有效防止手上长老茧。