First of all, Juvederm fillers are hyaluronic acid. Mainly, it is for sculpting and face rejuvenation. Similarly, Profhilo is also a hyaluronic acid injection. Profhilo hydrates the skin and also bio-remodel the skin by improving fat tissue renewal. It also helps with the stimulation of collagen and elastin.
So in my opinion, I would give it a good 6 months before you put Ellanse fillers. This is because both Profhilo and Juvederm fillers simulate collagen to a certain extend. Hence, you would want to see the effect before you actually inject another collagen simulator into your skin.