Help with glare (varnish)

[Zachary Thornton]

Hello everyone. I cover my paintings with a mixture of galkyd and OMS. This creates a nice even gloss and unifies the painting. (Is this considered a retouch varnish?)
However, I hate the fact that the painting, if not lit just so, is plagued by glare. This glare destroys the image. I'm going to try using gamblin Cold Wax Medium and see what that does. Does anyone have any advice?

Thanks!

PS. I use a lot of darks and black and notice that the glare is seemingly worsened when the paint surface is uneven.