I used a face mask from the brand Freeman that was called "dead sea minerals anti-stress mask" as a spot treatment. Not actually the way you're supposed to use it, haha, but it seemed to reduce the size and redness of some cystic acne bumps better than other things I've used. I decided to share this in case anyone wanted to give it a try. I simply put it over a bump and left it there for hours until I took my shower later in the day.