Good multi-purpose powder
I like this powder, it goes on translucent, it's mostly matte but doesn't make my skin look flat. It's very densely packed so doesn't fly everywhere when using a brush on it. I think it blurs imperfections a bit, but not as much as the Guerlain meterorites or the Hourglass ambient powders.
As a prep though, I haven't noticed too much difference in longevity of my makeup, but I have quite dry skin and perhaps it would be more noticeable if you are more oily? As such, I only have to use a light dusting and still have made much of a dent on mine after 6 months of use.
Aleph Beauty
Prep/Finish Powder is a multi-functional powder with skincare benefits to prime and protect the skin, while also helping set and mattify makeup for extra longevity. This powder uses a special blend of soy and rice extracts, which has been shown to help guard the skin against harmful environmental stressors so it can be use on its own ☺️