My daughter had it. It lasted about a year. If you go to a dermatologist they will burn them off but there is no guarantee that they won't come back.
With her doctor's blessing I used tea tree oil on them. When I noticed one starting to come up I would dab it once a day with a q-tip dipped in tea tree oil. If it continued to grow into a full-fledged pimple (some did, most didn't) then we would open it (make sure you get the white core out) and then dab it with tea tree oil once a day to keep it from getting infected.
You can find out more about it at
Molluscum contagiosum - Wikipedia, the free encyclopedia