Why do I have dark crescents under my eyes?

drink plenty of water. i also use boots own cucumber eye gel, it hydrates the skin and really works. not bad for £1.50!!!

Genetics

It's often genetic. Sometimes it's also a moisture issue. I'd try putting some heavy-duty moisturizer under your eyes, drinking a lot of water, and taking in as little caffeine as possible (it can rob your skin of moisture).

You could try Yves Saint Laurent concealer called Touche Eclat. It really works!

This can really just be hereditary. I know you're a guy, but try putting cold tea bags on your eyes - it refreshes the skin.

There is a cosmetic treatment available that removes them permanetly. Just new shown on 6 o'clock newscast.

some peoples eyes are just like that.

it can be hereditary do your mum or dad have dark circles under their eyes?

You have got make up on

check your pancreas, or observe your parents, or grandparents.. eye..