Consumer acne products are inferior, and this could have a lot to do with regulations, restrictions as well as ingredients included for better shelf life. The 2% SA that Paula's Choice sells is not strong enough to help. I use Lumiplexion SA which comes in three strengths. SA doesn't work overnight. You do have to be a bit patient, but you will notice a difference with the Lumiplexion strengths.
I also recommend black soap for blackheads. I recommend the organic kind you can buy off Amazon. We take the bar, cut about an inch thick portion off, grate it with a cheese grater, put it in a pump bottle and mix 50/50 with water. It's messy and melts if you use it as a bar in the shower.
I recommend visiting Lumiplexion's website. Then email her - Pamela@LumiPlexionSkincare.com Tell her what issues you're having with your skin and tell her what you're currently using. I recommend including a picture or two of your skin. She will give you recommendations.