1
Crush 1 aspirin. You need it to be fully crushed for this to work well. You can use 1-3 aspirins, but do not use much more than that. Remember, just as you wouldn't swallow a bunch of aspirin without asking a doctor, you don't want to put a bunch of aspirin on your face without talking to a doctor.
Using more than a couple aspirins, especially within a short period of time (like 5 or 10 aspirins per day), can lead to blood-thinning issues as it is absorbed into your bloodstream. While it won't cause ulcers, that much aspirin being absorbed into your blood stream is not good![1]
2
Mix the crushed aspirin with water. You'll want 2-3 parts water to 1 part aspirin. You want to have a thick, somewhat gritty paste, which shouldn't take more than a few drops of water (since you're only using 1 aspirin).
Apply the paste directly on the pimple(s). Make sure to use a clean Q-tip, or, if you prefer to use a finger, wash it thoroughly with soap and / or rubbing alcohol first to ensure that you don't add new bacteria to your skin.
Keep the aspirin there for 15 minutes. You do not want to leave aspirin on your skin for longer than 15 minutes. Otherwise your skin will absorb a lot of aspirin into your bloodstream, where it will remain for awhile.[2]
5
Use a clean, wet tissue to remove the aspirin. This can also be an opportunity for light, gentle exfoliation.
