Is Gouri (a PCL) a filler or just a collagen stimulator that itself dissolves a short time later?

47 year old female, fair skin, minor facial volume loss, average weight, normal exercise and decent diet. I’ve had Botox since 30, and done small amounts of HA fillers over the years. I’ve been reading about Gouri online and some things say it is a filler while others say it is not. What’s the reality, and any idea on timeline whether and when this may get approved in Canada and/or the US? Thanks!