Reviving Wood Floors Without Refinishing?

I would like to know about how to liquefy the existing finish, as referred to below in a Dec., 2011 post:

"There are other ways to revive a damaged wood floor, but they're almost as much work as refinishing, and essentially involve using chemicals to liquify the existing finish, which you then sort of spread around until it's shiny again. If you want more details about that, let me know."

By Marie H.