Cystic acne is deep and inflamed, so be gentle with it. At home, ice the spot for 5 to 10 minutes to calm swelling, then a warm compress later can help it settle. A microcrystal patch like Rael's Miracle Patch Microcrystal Spot Cover can support early bumps before they fully surface, and a dab of OTC hydrocortisone can ease inflammation short-term. Skip picking or popping, that almost always makes it worse and can lead to scarring. For the fastest in-office option, see a dermatologist about a cortisone injection, which typically calms a cyst within 24 to 48 hours. For recurring or painful cysts, see a board-certified dermatologist for a real plan.