So I use an alum block after every shave and have been for about four months now. Lately, I don't get much of an initial burn (still a little under my chin/jawline and the middle of my neck). The burn really comes from when I rinse it off. The best comparison I have is it feels like someone is scraping my face with an edgy salt lick. My face will burn for the rest of the day afterwards. I think I'm going to lay off of it for a week or so and just use witchhazel and my AS. I'll let you know how it goes!