What is the best way to fade shingles scars and dark spots? (photos)

I was diagnosed with Shingles (Herpes Zoster) 3 months ago. The painful blisters on my face initially lasted about 2 weeks until they started to scab over. The dark scabs fell off completely after a week, and bright red skin took its place. Since then, some red spots have faded while other areas of the skin have appeared darker. How long will the darkened skin last? Is it likely that this is permanent scarring? How can I help the fading process? Is laser treatment necessary for complete fading?

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