The color correcting base is a white crelly that is a little bit thick and goes on a bit streaky, as most whites tends to do. I used a light hand when applying this to try and avoid streaks, though I did have to use two coats and still had a few patchy areas. I will admit that because I was putting the holo coat on over it, I didn't make much an effort to get my base coats completely even and opaque. It wasn't terrible, but I probably could have been more careful when applying it. Also, because I don't get along with jellies at all, there was a tiny bit of bubbling but this was covered up by the holo part of the duo. Chasing a Unicorn holo top coat was easy to apply-- sheer but went on nicely and didn't seem streaky.
This still isn't quite a pure white holo, of course, but it's still pretty! Chasing a Unicorn does lend a soft greyish edge to the finish look, which I personally find a bit more flattering anyway (true white polish reminds me of white out) so I'm not upset it's not a true true white. You could probably vary how white/grey the finished product looks by varying the thickness of the coats of polish you use or how many coats you use.