How to Unhide Things From Your Timeline
If you accidentally hide a post on your Facebook Timeline or if you reject a post that you were tagged in, you can restore these posts from your Activity Log. Hidden posts are not deleted; they're saved in chronological order, and you can restore any of these posts to your Timeline if desired. This option is ...
2 Nov 2013 ... If you accidentally hide a post on your Facebook Timeline or if you reject a post that you were tagged in, you can restore these posts from your ...