I use Mr Taylor's aftershave balm, which is a gel. I don't know if it's the same as the sandalwood.
I shave, wash off the soap with warm water, and then splash my face with cold water, and while my hand and face are still wet I put on the gel and let it dry in. Sometimes I'll use alum first, but I need to properly wash off any residue or it reacts with the balm, sometimes I use aftershave splash after the balm has settled in and my skin is smooth - I don't know that it's in any way necessary, I just want to!