So, I bought both an ultra matte varnish and a satin varnish, and I've been testing them out.
I used the ultra matte varnish on the blue ring, and it has a bit of that chalky, grainy finish. The blue and pink ring has the satin varnish, and I actually like it a lot. However, on the open hand (please ignore the glitter, it was an experiment that failed miserably. If you have any tips for glitter, I'd love to hear them!), the satin varnish ended up being much shinier and noticeably changed the color. The hand on the left hasn't been varnished.
So my question is: if I switch to a regular matte varnish instead of an ultra matte one, is it likely to be less chalky, or is that just an inherent characteristic of matte varnishes?
Edit: I use Vallejo Satin and AK ultramatte. Both Apply with brush no thinning.