When applying Radian-B (a nicer smelling form of deep heat) to your affected shoulder, heed both Will's and the packet's warning: Do not apply to broken skin.
Thinking, "Well my skin isn't broken anymore, it was broken yesterday, today it's healing" and, "well, so long as I don't spray any on the bad bit" is all very good. But spraying the hot, hot, burny, stingy stuff on the bad, red, very red bit of skin - is really not the cleverest thing to do and can lead to you pulling funny faces in the bathroom mirror and uttering the time tested pain relieving phase, "fuckfuckbloodybollocksfuckshitbadger".
I'll turn the woosey button to "off" soon. ;-)