Will collagen booster injections be effective for facial slimming?

Hello

I used to be a bit chubby, so I went on a diet. However, I dieted so severely that I lost weight in my face before anywhere else, making my cheeks look sunken and completely lifeless. I'm worried about it.

I'm scared that getting fillers might look unnatural, so I was recommended a collagen booster treatment that supposedly plumps up my skin naturally, and I'm currently looking into it...

I heard it is similar to Sculptra or Juvelook volume treatments, so I am wondering if collagen booster injections definitely work to firm up the skin, even for temporary sunken cheeks like mine. I’m curious if a collagen booster procedure would really be a good method for me to restore facial volume naturally without looking artificial.