Dry Lo is fantastic! I had cystic acne for years and years. Tried medications, VERY pricey skin care lines, changing diet, meditation - you name it. After a car accident from the medications I needed to recover the cystic acne got even worse. I saw Dry lo on t.v. and figured why not give it a try. Within 2-3 weeks my cystic acne was gone! You smell like a burnt match but I didnt care. If you have a lot of acne you will look a little funny, my mother's cat wouldnt sit next to me for the first few evenings. I usually get Dry Lo in a kit so it is very affordable and a bottle lasts quite a long time. I get about a year out of a single bottle even in the beginning. I also liked that you can control how heavy to put it on. Because it uses sulphur (if you have allergy to sulpha I probably would ask my doc first) I wouldnt use it during the day even under makeup (smells like a match) I have no clue if anyone around me noticed the scent.