I do use it at times - don’t add anything to it personally.
I might be overdoing it at times, but for through preparation I do:
Hot shower and wash the face
Face lather, massage it in for couple of minutes, then hot towel on top of that lather for another couple minutes (usually after 40 seconds or so it’ll start cooling down so I’ll submerge it in water again) . Afterwards will wipe the lather off , apply preshave stuff if I feel like it, then lather up and shave as normal.
It can be a bit of lengthy process, but on handful of occasions that I’ve done this it seems like it really throughly prepares the hair for the shave