Laser Treatment to Remove a Sign Left by a First Laser Treatment to Remove a Small Sign? (photo)

I´ve been submitted to a laser treatment on the whole left side of my face just to remove a small mark left by a first treatment whitch didn´t remove a small sign (after 4 months). Now it has passed 5 weeks and the redness remains exactly like after the first week. I would like to know what is the rednesse due to and if you have any idea when or if this rednesse will disappear. Thank you.

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