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问:随着人们生活水平的提高,对美的追求日益增强,许多中老年人也开始注重仪表,使用染发剂将斑白的头发染黑。可是,有些人使用染发剂后却发生了过敏
Q: As people’s living standards improve, the quest for beauty is getting stronger. Many middle-aged and elderly people also begin to pay attention to instruments and use hair dye to darken their white hair. However, some people develop allergies after using hair dyes