The experts at N.I.H. say the wax can be softened with mineral oil, glycerin or ear drops. They say hydrogen peroxide or carbamide peroxide may also help.

• 国立卫生研究所的专家说，矿物油、甘油和滴耳液可以使耳垢软化。他们说过氧化氢和过氧化脲也可能对此会有帮助。