How Many Sitttings of Fraxel Restore Will Be Required After Having 3 Sittings of Fraxel Refine for Superficial Scars on Face?

I am 27 yrs old Indian guy,I had some amount of hyperpigmentation along with a few superficial scars on the face. I had 3 sittings of fraxel refine at an interval of 3 weeks each. Now i am considering fraxel restore. After having fraxel refine,can i decrease the sittings of fraxel restore? or will i have to undergo the claimed sittings(minimum 3) for the elimination of the above said condition? How much gap is required b/w 2 sittings? plz highlight potential side effects too.Thnx very much.

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