Nisha, it looks like you are already creating memories with your egg!
Welcome to FGRV.
As to the question of washing, I just use the same cleaner I do on my cars, presently Mequire's Car Wash. I then wax with whatever product again I use on my cars.
If you have a problem with dull finish, or staining, there are suggestions elsewhere on this site.
Good luck and lots of enjoyment to you with your new baby.
A charter member of the Buffalo Plaid Brigade!
Whether you think you can or think you can't, you're right.