Repeat Fractional Laser to Repair Hyperpigmentation and Roughness?

I had a Fractional CO2 Laser done 10 months ago on my face. I had severe PIH, although lightened, it's still a shade or two darker especially around my under eyes. Texture is also rough on entire face. I saw a dermatologist and he says that the best thing to do is to repeat fractional laser but at low settings of 6 - 8 sessions set 3 weeks apart. I have tried Hydroquinone 4% but no real effect. Would like a second opinion. Thank you so much for your attention.

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