I don't know if others use this soap, but it is absolutely fabulous. I have been experimenting with other companies shave soap, but always have to go back to my van der Hagen Glycerin soap. It is no joke regarding being hypo-allergenic and non-irritating. I don't think I have especially sensitive skin (I still have not found a shave cream that irritated my skin), but it seems other companies shave soaps give me irritation. Williams was another exception, but it does not lubricate enough for a smooth shave. I have tried Col Conk soaps, including their own glycerin soaps and they seem to turn my face red. I can still get a decent shave (not as good as with VDH), but at the cost of irritation.
For me this ruins the entire shaving experience. With the van der Hagen Glycerin soap I just get great shaves day in day out. I highly recommend it to anyone who is a experience shave soap user or the newbie not sure what to try. Their Deluxe soap is pretty nice, but I find the Glycerin far superior. I have yet to actually use their Select soap, but I do own a puck. I really hope this company says in business, because I would be very happy using the Glycerin soap the rest of my life. It is that good.
You gotta try it. I'd still buy it if it cost 10x what they actually sell it for. I guess I am lucky I found a soap that works so well and costs so little. Try it, you might be in the same boat.