When I use an alum I finish off with putting some Proraso pre shaving cream on (with the green tub). This is after I rinse off my face.
Do people think that's necessary? Do most people not bother putting anything on afterwards? I find the Proraso cream is OK in the colder months but I wouldn't use it on a really hot day.
If people use something else after using an alum block I'd be interested to hear about that too.