过多的烫发和染发会对发质造成损害。

Too much perming and coloring can be harmful.

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但我们的销售情况告诉我们，在选择染发剂时，女人最可能因为看到名人改变发色而去染自己的头发。

But our sales tell us that when it comes to hair dye women are more likely to change their shade when they see a celebrity switch shade than any other reason.

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受试者没有被问到多久染一次发，也不清楚染发剂中的那种组成成分会产生这种影响，作者说。

Respondents were not asked how often they dyed their hair, and it is not clear which component of hair dye might be responsible for this finding, say the authors.

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