I got a little sample of the mask and it was just a one use thing. It didn't harden and feel gross, it was quite pleasant. I left it on for 20 minutes and it washed off easily, unlike other masks I've used before. It was great

Well, I finally had time to try this out (literally just washed it off my face). And I really like it! It smells really nice, my skin feels really soft and smooth, and it's easy to use.
My only complaint is that they use animal products to make it. I generally avoid buying/using things with animal ingredients in it, but if that's not an issue for you then I would definitely recommend it :)