"I don't know," said Rosa, because that was just the thing you wanted to hear from someone putting smelly burny crap on your head. "I think it just, like, kills all the pigments or something. If you drink this stuff, it totally kills you. But, like I said, don't worry. I'm using a diluted solution, it's the same stuff I use all the time on my whole head, and I'm still alive, aren't I? All you're getting is a little streak, that's nothing."