For a surface whitehead, a hydrocolloid patch worn overnight will flatten it by morning — 6 to 12 hours of osmotic absorption is enough to pull the exudate out. Rael Miracle Patch, Hero Mighty Patch, COSRX Acne Pimple Master, and Nexcare Acne Cover all use the same FDA-cleared composition at roughly $0.20 to $0.40 per dot. For an under-the-skin cyst that has not surfaced, switch to a microneedle patch like Rael Microcrystal or ZitSticka Killa — the self-dissolving salicylic acid and niacinamide darts reduce inflammation in 2 to 12 hours. Skip toothpaste, lemon, and squeezing. A dermatologist Kenalog injection shrinks a deep cyst in 24 hours if a patch will not cut it.