We just purchased a nice floor model H&M leather recliner. There was a sticker on the small bar (footrest) that apparently had been on there for some time as it was hard to get off and left a sticky residue. Some came off with soap suds and a soft cloth, but not most of it. Any suggestions? It is protected leather, Juno.

Also, I would like to condition it after removing the residue, but am reluctant to use just any conditioner as some of them seem to make matte finishes shiny.