I don't know how long it takes. I use hard soaps almost exclusively. What I've done for about as long as I can remember is heat water some water in a teapot before showing (which shouldn't be necessary; it's just what I do when I can), and then cover the top of my soap with it and let it soak while I'm in the shower. Depending on how much loose water is standing when I'm ready to load my brush, I might pour out some of it, but not any of the soap that has liquefied or turned soft. It usually doesn't take much pressure or time to load when I do that.Thanks for the suggestion! I will definitely go this route and let soak a while longer
I must say that I agree w/ @Rudy Vey. I post photos below of my brush rig. Of the 23 brushes shown, 9 are Shavemac 2 band silvertip knots. I've tried all the brands in the original post; these are the ones I reach for. YMMV.Shavemac is also a maker that should not be forgotten here. Their two-band silvertip blows all the mentioned makes out f the water.