Question: what to do when you have a big zit?
Answer: Resist the Urge to Pop It. First and foremost—don't ever try to pop a deep pimple. ... 
Use an Acne Treatment Medication. If you use topical acne treatments, continue to do so. ... 
Break Out the Warm Compresses. ... 
Visit Your Dermatologist for Incision and Drainage. ... 
Try a Cortisone Injection. ... 
Make Sure It's Really a Pimple.