If you have acne or acne scarring this is definitely something you need to try. It works on me and my friends but I saw some reviews online, that it didn't work as well for other people. Because of that, maybe at first purchase only 1-2 packs and then if it works for you, you can buy more. I don't know on what it depends but yeah, this is just something I noticed and that's why I'm giving it 4 stars. For me works as it should and I love it!