Hi and thank you for your question!! Each microneedling procedure /treatment is a little different. Vivace is needling with radiofrequency and it delivers the needling in a more consistent and controlled pattern than some other devices. This is usually & less often visibly traumatic to the superficial tissue. Also, because it is delivery radiofrequency energy during each pulse, this in itself will minimize some of the bleeding. We use 1-1.2 mm on the upper facial areas, around the eyes and forehead. We use 1.5-3 mm in the other areas and the neck. Vivace is a great treatment for overall rejuvenation, brightening, texture and some tightening! Best, Dr. Grant Stevens