Hyperdiluted Radiesse or Radiesse for stretch marks? (Photo)

I have stretch marks on my shoulders(pic attached) I've done 10+ laser treatments and 3 microneedling treatments which have improved them tremendously but I want to add some volume to flatten them out a little more and then I want to go in with lite scar camouflage. I've researched online and seen that there was a study that showed it had worked. What would be the cons to this?