What's the name of this amazing spray? (details inside)

So I’ve been watching the Soccer World Cup in Brazil.
Lots of times each game, it seems, I see two players collide and one or both would end up lying flat on the pitch writhing in pain. Then the trainers would come out and spray something on whatever body part is hurting.
The game resumes, and before you know it, the player is racing down the field like a young gazelle.
What is the name of this spray? (Name of the chemical, please.)