Voluma should not move after it is injected. When I inject Voluma, I am able to mold it and shift its position a little right after I inject. Within a few days, however, the body grows into the injection area and anchors the filler down. Think of Voluma like injecting a scaffolding. Over the days and weeks after injection, the body deposits collagen and connective tissue inside the empty spaces of the scaffolding. I've injected several thousand syringes and I've never seen it migrate. Becasue Voluma lasts for such a long time in the body and because it is such a good sculpting agent, be sure to go to an experienced injector to get the most out of your Voluma treatment. Hope that helps!