Brothers/Sisters,
I have seen on Kink.com the subs being sprayed with a watery solution that apparently after a few minutes seems to cause minor skin burning and irritation.  
The sub is restrained and they spray the solution on - then they massage the liquid into the skin.  After a few mins we have some action!!  
It looks very similar effect to some of the muscle rub creams that you use for minor sprains - you know the type that gets hot after you rub the cream onto the injured area.
Like all things put on the skin/body - its essential to test it to see its safe to use - you obviously need to check to see if the sub may be allergic to this stuff etc etc.  
I was wondering what this liquid was?
Anybody have any ideas if this is an off the shelf item or is it something Kink.com makes themselves?