So I know the venus freeze is for tightening, cellulite and a bit of general slimming, but I heard that after the skin heats up to 42 degrees (Celsius??/Fahrenheit??) with the venus freeze you are suppose to stop and move on to another area. Is that true?? Also, is it a different procedure for the face? That is, since this machine is also produce a slimming effect/fat reducing effect, and u don't necessarily want fat reduction in your face, is overall treatment for the face different??