We all miss out on sleep sometimes, whether it's because we've been out partying, busy studying, crying over a relationship, sitting up with a sick child or simply engrossed in a good book. And the worst of it is that it's all too apparent the next day when our eyes are puffy and rimmed with dark circles. So it's good to know that whatever caused the damage, a little concealer can help hide the effects. Here we've got five tips on how to use it to best advantage:

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