Lightening the Genital Area with Q-switch Laser?

Does q-switch laser (1064 nm) lighten a dark genital area?I am asian but on the fairer side but my genital area is much darker than the rest of my body. I was told that it can be lightened using q-switch. I have had two treatments but I cant see any difference yet. The laser stats of my session are as follows: Fluence:2.0,Spot size=6,Frequency=6,Mode and Pulse Width=Nd. My doctor said I will require at least 8 sessions. I want to know will q-switch lighten my genital area? By what percentage?

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