I've only had about 6 sessions that fully covered my face, with another 4 or so covering the perioral (chin and upper lip) region. Besides the perioral areas, which take more time to begin with, I have just one patch on my right jawline. This is also discounting the couple reddish patches, but you can't really see these.
Also, I can't really see where there's shadow until I get to ~6 weeks after a session. Also worth noting, I get very pale when I stay out of the sun, and my facial hair is very dark, besides the couple red patches.