My first experience with shaving soap was with VDH from Wally World. After I finished, I had some crazy irritation and itching. I blamed the soap. After a week or so, I tried again with the same results. Again, I blamed the VDH. Well, I now know that it wasn't the soap. I used a LaToja stick and had a great shave until I used my aftershave. That's when the irritation and itching started. So, on my next attempt with the stick, I used my AOS balm with no irritation. This left me curious. So, last night I went back to the VDH and used my AOS balm again with no problems. It seems that I have become allergic to my aftershave that I'd been using for a little over a year. I didn't think that could happen. What do ya know, VDH isn't so bad after all. Now I have to find some more aftershaves so I don't use up my AOS so fast. 
