After applying the mud to your face you let it dry for 30-45 minutes. It's funny when you can feel how the mud gets dry and it creates a tension to your skin.
It hurts so bad when you take off the mask. But it's worth it. I had taken away half of mine when I pretty much was in tears haha. But afterwards you get this smooth baby skin. So it's worth the pain. And it's so satisfying when you can see your dead skin being removed. Ah.
And a pro advice: don't put the mud on your eyebrows, it hurts super bad and it's impossible to get off. And avoid getting it stuck in your hair. If there's some black spots left when you remove the mask the easiest way to remove it is with make-up eraser.