I use queen Helene mint julep mask which contains sulfur. It is a drugstore brand. In that case, I'm sure it doesn't have a high level of sulfur. My acne isn't bad, maybe two or three spots a week. It works well drying up pimples and shrinking pores. I do not have sensitive skin however.i use it once a week to once every two weeks and Ive seen the benefit. It runs between 5-6 dollars.
And also a follow up moisturizer that also keeps me clearer is the Clean and Clear oil free moisturiser with salicylic acid in it. I also use the neutrogena wave cleaner (the one that vibrates) in the morning and night.