Ellansé collagen stimulator can last for 2 – 4 years which is much longer than other dermal fillers (12 – 18 months) as Ellansé dermal filler is made of microspheres that degrades and dissolves at a slower pace than other fillers. While the microspheres dissolve, they stimulate your own collagen to substitute and fill up the area. The longevity is based on the length of molecule chain that compose these microspheres. Longer molecule chain directly imply that the filler will last longer.