Darkness around eyes. What could I do to resolve this?

Hello, for the past year or so I haven't been sleeping well (been getting around only 6-7ish hours per night) worth of sleep and I have been developing some form of darkness around my eyes. I do not know if this is permenant and I was wondering what I could do to resolve this; will sleeping 8 hours a day fix the problem? I can see a vain as I stretch the skin and I'd like to know what I could do in regards to this? I also have bags under my eyes.

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