Spot-treat with 2.5% benzoyl peroxide for 10 minutes, then rinse. Place a hydrocolloid patch over it for the next 6 to 12 hours. Hero Mighty Patch, COSRX, or Starface Hydro-Stars all work for $5 to $15. If the bump is still under the skin with no whitehead, swap to a microneedle patch. ZitSticka Killa or Rael Microcrystal delivers salicylic acid and niacinamide through dissolving darts. Ice the area for 5 minutes if it is red and inflamed. Skip squeezing — a fresh pimple has no surfaced pus to extract. You will turn it into a 5-day cyst.