Popping pimples is not a good idea as it spreads the bacteria and infection to other parts of your face, causing more breakouts (not what we want). Additionally, it increases the risk of the pimples leaving behind dark marks that take months to fade and even life-long scars.
You should not try to squeeze a pimple that does not have a yellow/whitish pus filled point in the middle. In this case you can try to reduce the pimples size by wrapping an ice cube in a clean towel and applying it for 5 minutes to the pimple (up to 3 times a day).
The only time you should pop a pimple is when it shows a "head" (i.e. a white or yellow spot in the center).
How to pop a pimple:
1. Wash your hands well with soap.
2. Use a sterile needle. Alternatively, sterilize a fine sewing needle or a straight pin with a match or a lighter and allow it to cool.
3. Wipe the pimple with a bit of alcohol.
4. Hold the needle, parallel to the surface of your skin and pierce the tip of the pimple’s yellow center.
5. Find a cotton swab and gently press it around the pimple.
6. Be gentle, if the contents don’t come out easily, don’t force it!
7. Apply a bit of Vaseline/Aquaphor.
8. Reapply the ointment after you wash your face or shower.