The magic hand keeps him moist lol but doesn't it sorta dry if it is "used up" I mean temporarily
LL
Lucid LuiAir Laki Laki
The Magic hand doesn't run out. Unless of course you've got an annoying as hell villain stealing it's fingers one by one and even then it's still got tons of juice.
So yeah, Magic hand has never been shown to weaken or run out.