Before anything I feel I should warn you that I don't have rosacea so I can't attest to the product's efficacy in that regard. I do have sensitive skin that, besides being acne prone, also tends to get some redness once in a while and, unfortunately, I can say that it didn't really do much to cover it up. You probably would need to layer it up more, but I find the consistency of it way too thick and prefer to just use my MUFE full cover concealer to hide any redness or blemish instead.
On the other hand, I picked this product up because, being on isotretinoin (roaccutane), my skin is drier and more sensitive than usual, so I didn't want to use mattifying base that would emphasize/aggravate that. This BB cream is moisturizing and does not break me out, while also giving me a little bit of coverage, evening out my skin tone a little bit (even if it doesn't totally erase redness). I also feel that it calms my skin down after I use drying products during the night which is a plus for me. I do use powder on it though, because I just feel that it might melt during the day and that a bit of powder keeps the shine at bay in my problem areas (mainly the T-zone).
A big con of this product is the colour range, which is practically non-existant. The only colour I've seen is "claire/medium" which is a tiny bit dark for me, but I only use a tiny bit of product so I can manage with some good ol' blending.
All in all, the main selling point of this is that it good for sensitive, acne-prone, dehydrated skin and I'm having trouble finding a product to replace it. I guess I need to look around a bit more.