>>6202462I have been looking into this myself, I was planing on doing some panel lining/subtle weathing/decaling and sealing it with a matte topcoat. I was unsure what would be the best because topcoats are usually done over painted surfaces ala gunpla.
What I found was this stuff seems to be the best for unpainted surfaces. I have not bought any or used it yet, but it gives a nice matte finish for people who have used it on their RDs. The down side is you have to use ventilation when using it, it is very bad stuff for your lungs.