I asked last week and no rosehip oil users answered, even though I've spotted a couple mentions of using it in other posts. One seemed to be from Australia. And I think the post I first heard about it was from someone in the UK as that is where the vendor she referred to is located. Most here use Camellia oil and I assume are from the U.S. and Canada.

They are both described as having similar benefits, with the oleic acid and nutrients. But they claim the rosehip oil has tretinoin as well.