DDF sulfur therapeutic mask is a standard stand by in my arsenal. It contains 10% sulfur as an active ingredient and is great for when your breaking out. This mask is recommended to be used once a week, although I keep it for when I’m in a pinch. This mask is also great to use if you break out on your chest or back. Whenever it starts to dry up a little, I just add some water to keep it from drying out. Cheers!