I have a friend who had boils at frequent intervals.

  I always thought these to be mean bacteria, maybe a type of staphylococcus.

When I worked for IBM in the Late 50's and early 60's we wore white shirts and ties.
Several times, I got boils on the back of the neck.

The doctor I selected to do the minor surgery told me that these bacteria were everywhere, on money, door knobs, typewriters, and virtually everything else.

He believed that the starched shirts were rubbing the bacteria into the root of a hair. We had short hair
back in those days.

  Would a few ounces of CS a few times per day help?

I always felt this was a weakness in the immune system. I have had one or two of these in recent years. The immune system, in every case, did a fantastic job in short order. They never made the big hard spots like they did when I was in my 20's.

These things can be a thorn in the side or a pain in the rear, depending on the location.

  Wayne