It's PRID. It's a homeopathic drawing salve. Takes care of icky stuff like splinters, boils, etc. I tried it last night (splinter or something deep in the bottom of my foot) and I stalled today, so I'm thinking maybe it's not a good idea. I stalled the day before because I wasn't thinking and put sunblock on my daughter. UGH. 3 days at the same weight. Frustrating!!