Acrylic matte varnish.

Tools, Techniques, and Reference Materials Painting and airbrushing
1

Any suggestions for a good acrylic clear flat varnish?

2

I get excellent results from W&N. Vallejo works ok.

3

Vallejo Matte Varnish 70-520 for me

4

Do you want brushable, or rattle can. Regular hardware and paint stores usually have clear acrylic varnishes.

5

Brushable and also with a air brush. Regular hardware store clear acrylic varnish is not too thick?

6

Don is probably talking about rattlecan stuff like Krylon.