I really tried to leave it on for the full 30 minutes, but after a few drips, I couldn't take it anymore. They should have done a disclaimer about the rinsing process. Disclaimer: This makes a big sh*tty mess in the sink. I chose the word "sh*tty" carefully. The real kick in the head about all this? I did this mask on Saturday. It is now the following Thursday and I'm having a major pre-adolescent zit-fest on my face.Nonetheless, she maintains: "I hope no one is taking my blog as fact. I mean, it's factual that I f**k shit up, but it's not factual that everyone else will." [pintester]