Secret Weapon Miniatures has a new product to enhance they’re already-beloved weathering pigments with their new Weathering Pigment Fixer.
From the website:
This unique enamel fixative creates a permanent bond between your model and the pigments, without altering the texture or color of the pigments.
Apply with a brush over the pigments via capillary action to keep a soft texture. Sprinkle pigments over fixative to get a rough texture. Or create a wash with pigments and fixative for a dusty finish.