Vallejo - Surface Primer Color | Black Acrylic Primer 200 ml (6.76 fl.oz.) | Matte Finish and Fast Drying | Perfect for Airbrushing and Great Adhesion to Figurines and Scale Models

After a really good wash with hot water and dish soap I brush on Vallejo black primer. I firmly believe washing is key before you prime the minis. Haven’t found anything else that works as well. https://a.co/d/01G2lpIv