I continue to have challenges as I experiment with primers. Here is one issue: I barely have time in the morning to apply sunscreen and then primer and then makeup. So it's a big deal for me waiting for the sunscreen to dry down before applying primer. But if I don't wait like 20-30 minutes, here is what happens: my normally transparent micronized zinc oxide sunscreen turns opaque white when I spread on the primer. Then when I apply powder foundation, it shows up as a weird color against the white (too pale, too yellow, just wrong). I even tried blow drying my face after applying sunscreen to see if I could speed up the sunscreen drying down. Any ideas why the primer would turn the sunscreen opaque white like that? It happened with more than one brand of primer. Weird.