Sometimes — a blind pimple surfaces and ruptures roughly 30 to 50% of the time, usually within 7 to 14 days. The rest get reabsorbed by the lymphatic system without ever forming a head. Forcing one open by squeezing rarely works because there is no surface opening; the pressure drives pus sideways into the dermis and seeds scarring or post-inflammatory hyperpigmentation that lingers for months. The faster path is a microneedle patch like Rael Microcrystal Spot Cover or ZitSticka Killa Kit for at least 2 hours, which delivers salicylic acid 2% and niacinamide past the stratum corneum. For a painful cyst on a deadline, a dermatologist Kenalog injection shrinks it in 24 to 48 hours.