Last summer I had a horrible flare up with acne. My skin is usually pretty clear so I don’t know where it came from. I tried so many things to get rid of it and it wouldn’t budge or just became worse. After some research I came across the acne free sulfur mask and decided to give it a shot. Literally after about a week of using this, my acne completely cleared. I know it was this stuff because at that point I stopped using all products except for moisturizer and introduced this mask. Didn’t irritate my skin. Felt cool when I put it on and does have an eggy scent but it’s worth it. I do not care especially because I credit this for clearing my skin. Game changer!