Lockhart and Lupin

[Manda1999 at aol.com]

No: HPFGUIDX 29198

In CoS, Lockhart refers to the Homorphus Charm which he used to 
turn a werewolf back into a man. Since he says he saved the town from 
the monthly attacks, it must be a permanent charm. If, according to 
the book, Lockhart's stories are true (the actual feats were 
performed by other wizards though), why has no one used this on 
Lupin? He just uses the Wolfsbane Potion which makes him safe during 
his transformations.

Any ideas?

Manda