What was the typical medical aftermath for someone who has been tarred and feathered?

by Theschuh

I'm specifically thinking during the American revolutionary period, I've always heard about people getting tarred and feathered, but I've always wondered just how bad it would be in terms of recovery.

Let's say I'm a British spy who has just been outed, and as a result have been tarred and feathered in the public square. What's my next move, and how are my chances of survival/keeping my face?

Searocksandtrees