I used an Alum block for the first time yesterday. Now I have a few questions. Does it sting like the dickens for everyone else, or is it just me? Are there different brands that act differently? I have an Osma Alum Block I picked up from the Polish guy on ebay. From what I've been reading there are Aluminum and Potassium Alum blocks. Osma is a Potassium. I just don't think Aluminum would be a good substance on the skin. Are there any brands that don't sting like a hornets nest? I used cold water on the block and my face. And is it just something that takes time to build up a tolerance to? And man was I shocked to see the tiny size. Maybe it's just me! :thinking: