I'm 26 & I got 2 sculptra treatments 2 years ago. My face is the roundest it's ever been, as if the sculptra is peaking now. It's not weight gain. I was 109 ibs, 5'4 pre-sculptra & I'm now 100 ibs. I've always been underweight with chiseled features. Im confused as to why my face is STILL SO FULL. Dr.'s say sculptra goes away in 2 years, how is this logically possible, if it's my own collagen now? Wouldn't it break down at the same rate as my regular collegan? What makes this collagen different?