Many hours of mask wearing and face shield fogging playing havoc with my pores, especially on the nose area. A small price to pay for the situation we all have found ourselves in for the last 20 months. Blackheads and other acne not seen since I was 17. The product is very effective at removing dirt and bacteria deep in the pores. I did the full face treatment the first time I used the mask,but I found that I can concentrate on the area most affected. Every 2 days, I make the time to do a half hour treatment. It's working. The product is easy to apply,is not noxious, and peels off with little effort. I never pictured myself as a facial type of person,but you gotta do what you gotta do sometimes. It's time well wasted. I should mention that the amount of medication in the jar is super generous and it comes with a tiny spoon for an applicator.