A dermatologist triamcinolone (cortisone) injection collapses a large cyst in 24 to 72 hours at roughly $50 to $150 — the only reliable same-day option. At home, start with ice in a cloth for 5 to 7 minutes to drop swelling. Dot 1% hydrocortisone for one night; cap at two days to avoid skin thinning. Layer a ZitSticka Killa microdart with 2% salicylic acid at bedtime; the dissolving cones reach below the skin barrier where flat patches cannot. Once a whitehead surfaces, switch to Hero Mighty Patch or Rael Miracle Patch overnight to absorb the exudate. Skip popping — incomplete drainage refills within 48 hours and increases scarring risk.