I try to use this semiweekly. This really helps reduce the size of pimples and pores. It also lightens post acne marks/scars. This is gentle enough to use regularly. I don't get black heads, but my white heads lessen the more I use it. I use this with a few drops of Jojoba and Vitamin E oil. The combo of the aspirin and oils make this a dream for my skin! The aspirin exfoliates while the oils absorbs into my skin. What has worked best for me is to cleanse my face, make the mask, massage it on, wait 10-20 minutes, then shower. It is more messy when you wash it at the sink. I try to not let the mask become too dry because it will start chipping off everywhere. I have been using aspirin masks for the past 4 years! I started out using this with Queen Helen's Mint Julep Mask. It works so well together, but I noticed how much moisture gets sucked out of my skin. I prefer this oil combo a lot more. I still use the Mint Julep from time to time, but not with the aspirin. I love researching and sharing products that have worked so well for my problem skin, so I'm happy to share this with anyone who watches! =]