Lypolitic injections side effects

Hello, I had a mesotherapy treatment a few years ago on my legs and lower belly for reducing cellulite. I didn't experience any side effects besides the usual bruising from the injections but after a few months the celullite came back, except worse! My question is: would mesotherapy be responsible for getting a worse case of celullite, are there any long term effects known? or could this be just a coincidence and be caused by a change in lifestyle? I should mention i am in my 20's :)