I have a few of these colors, and find them helpful, Badger Stynylrez.
https://www.amazon.com/Badger-Air-Brush-Co-SNR-210-Stynylrez/dp/B00K3KGWQS/ref=asc_df_B00K3KGWQS/?tag=hyprod-20&linkCode=df0&hvadid=167148482147&hvpos=&hvnetw=g&hvrand=10377529976530959500&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9053836&hvtargid=pla-305941821090&psc=1
If you are willing to use other products, I know some folks Kilz barrier, and they thin it with Alcohol. I have yet to try this, but given it is used as a moisture and even mold barrier, I can see how it would work.