This is a good sulfur mask. I got a sample size of it in the "knock off" proactiv 3-step system. I have used it twice and thought I would look it up on MakeupAlley to see if other people like it, and there wasn't a review on here - so I thought I would make one.
Now, I have only used this product twice so I can't really say how well I will like it or if it is life-changing or whatever, but I do like it. It makes my skin very soft and HAS improved some of the break outs I have. I would TOTALLY recommend the 3-step system and if the travel size sulfur mask comes in it, give it a try!