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30岁不到却长了老年斑，难道是未老先衰？
source link: https://tech.sina.com.cn/d/v/2020-08-05/doc-iivhuipn6922014.shtml
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来源：科普中国俗话说，爱美之心人皆有之。人一旦过了25岁，就不得不面临一个问题——衰老。特别是女性，对于这种衰老的担心，更多表现在皮肤上。年龄大了，长点也就还好，正常的皮肤代谢。但……更让人费解的是，继脱发之后，90后竟又开始长老年斑了。并
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