If that salve on Amazon is anything like the old black, " Watkins Salve", it will (pardon my old timey euphemism ) "pull Hell off the Cross", ha. It was sold by the "Watkins Man", door to door salesman when I was a kid. Back then, many kids would develop boils. Put a dab of that on under a bandaid, and here came the core! Ha Maybe soaking in hot Epsom Salt Water a long time will draw it out too. I had one in my back ( slid down a paneled oilfield shack and a splinter went deep, broke off. My boss was wimpy, so had to go to Doc. He deadened it and cut it out.