I got asked this from a friend and had to say I have no idea, I've been using a brush soap or cream since I started shaving. But I said I would ask a reliable source for more information. They will not go to a brush soap or cream.
Are there any non brush style soaps or cream out there that are worth using? I know nothing compared to a good brush lather but they are using canned goo so it will be better than that.
Any thoughts I can pass on???
P.S.
They wont do straight (to afraid but I think I can get them to safety razor)