am actually one of drnano's client, i lost 23kgs since last yrs Aug 08 , i found that their trt is good and effective . blue-black of coz la coa its using presure ma,,,,so when it hit on our cappilaries it turn blue-black la, same like we do slimming massage n knock on something sure blue-black . not only that i lost weight but my overall well-being oso felt......