What is the Typical Effective V Beam Setting for Treatment of Generalized Flushing?

I am a fair skinned, red haired 43 year old with diffuse redness on my face. A dermatologist I was referred to recommended I have 2-3 treatments of V Beam purpura.  Three weeks later the bruising was severe and left me with brown discolorations. I am reading now that bruising may not be necessary for treatment of generalized redness. With this in mind I will pursue less drastic V Beam treatments in the future but would like to know the laser pulse setting range that is generally used/ recommended for this sort of treatment. This will ensure that I know what I am paying for.