Face scar revision gone wrong for 2nd time?

I'm really sorry you have been going through this. I am not much in favor of scar revisions in certain locations subject to tension and motion, since these increase the risk of stretch scars, as seems to be your current situation. Rather than a third scar revision, which, as you contend, poses a risk of no improvement or worsening, you might consider a couple of quick and simple, relatively inexpensive techniques, subcision and Dermastamp microneedling, which engender little to no downtime and no further cutting and sutures. Subcision can help to elevate the depressed portion of the scar in order to make the base more flush with the surrounding normal skin. Once this is done, should it prove necessary, localized microneedling with a Dermastamp may be used to help to better blend the color and texture of the treated area with the normal skin around it. For more on either of these techniques, check out the archives of RealSelf.com. Make sure to consult with a board certified aesthetic physician and be certain to ask to see his/her before and after photos of scars treated in this fashion before agreeing to proceed. Best of luck. 

Fractional laser and scar injection with PRP SC can help improve your eyebrow scars. Best, Dr. KaramanoukianRealself 100 Surgeon