What is comic book 'restoration'?

What is comic book 'restoration'?

Mark Zaid (Owner of Esquire Comics) gives expert video advice on: How does restoration affect a comic book's price?; Should I use tape to repair my comic books?; What is comic book 'color touching'? and more...

Comic book restoration means some method has been used or applied to the comic book, to try and restore it back to its original state. Comic book restoration is used to increase the grade, enhance the visual appetite or asthetics of the comic book. In that sense, the definition of restoration is just as it is universally accepted in other types of communities for hobbyists. It's the attempt or method used to restore the comic book back to it's original shape or form.