Dermal filler
"I have used fillers off and on for 36 years.  Collagen, Restylane, Radiesse, Juvederm,  Voluma, and more to fill acne scars and laser burn scars above my lip caused by a quack.  I've always had at least a modicum of improvement and sometimes even  success with these various fillers.  However, when I finally decided after two years of research to go ahead and have Bellafill injected to one area of my face where there are acne scars, I wound up with absolutely no visible or palpable evidence that Bellafill was even in my face. A total rip-off. Utterly useless material. In fact, the acne scars are even more evident after this bizarre injection episode.  Just because the FDA approves something doesn't mean it has any merit."