SCALP PRIMER 36 is a water-based, anti-“wet-look” insulating primer. It creates an insulating layer between the substrate and paint or varnish. This primer prevents the surface from darkening and graffiti from bleeding through. In the case of VERNAEAU PU16 permanent, anti-graffiti protection, SCALP PRIMER 36 helps prevent that wet appearance and darkening of the surface. It can also be used to isolate graffiti on a surface before painting.