Help Cleaning My Hand Dirt from the Palm Rest

Guys...

Pardon this newbie question, but, I was not successful searching exactly what to use and how to clean those gray stains from dirty hands on my palm rest? They are driving me crazy and any help from you will help me a lot.

Thanks!

Mr. Clean eraser works like a champ!

Mr. Clean Eraser works wonders....

An unbelievable product!

Go to Wal Mart and get a pack of white Pentech erasers. They work just fine too.