Dr Cheng Yu has given a great answer!
Trisya, in my own practice I tend to limit the patients to 3-4 weekly sessions for laser toning for pigmentation. In selected cases of melasma, I ask the patients to do toning every 2 weeks, albeit at a lower fluence/energy setting which I find works better at reducing the risk of pigment cell (melanocyte) activation.
Different strokes for different folks, so I would probably suggest you discuss with your doctor on the plan.
Wishing you the best!
