Those particulates are problematic, without any doubts.
My grandmother swore by zinc and castor oil cream. But she swore by most things to be honest, when she wasn't sparring in the ring down at the Miners Welfare she was knocking back the Fed Best in the snug with the WI.
Tucking into a steak and kidney pud from grandma had the same sweaty feeling as a scene from The Deerhunter.
I believe that there are better preparations on the market now than zinc and castor oil cream. Muller Rice, for instance.
H
H, it would be good to know which preperation you would most highly recommend, so it begs the question.........what Preperation H??