I Had Evolence Injected in the Lips Two Years Ago and I Still Have Lumpiness.

I still have lumpiness. Does this stuff ever degrade? I read that there is no way to dissolve the lumps but recently read monthly cortisone injections dissolve it. Which is it? I do have patience and would be content to hear that it will indeed degrade on it's own. Two years and still lumpy with little noticeable change in months though is discouraging.