时尚美甲不利健康

指甲表层有一层像牙齿表层釉一样的物质，能保护其不被腐蚀。要是把指甲表层锉掉，手指就失去了保护层，对酸性或碱性物质的腐蚀失去抵抗力，经常美甲会引起指甲断折，颜色发黄或发黑，影响健康。

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