Water slide decals (or slip decals) are water-mounted decals generally printed face up and rely on the dextrose corn sugar residue from the decal paper to bond the decal transfer to a surface. A water-based adhesive layer can be added to the decal to create a stronger bond or may be placed between layers of lacquer to create a durable decal transfer.
Check out Muttley’s vintage waterslide decal collection. These designs are so rad. I wish this was still a thing. They have that non plastic feeling that old cars have and i would bet that the fading ink would go so well with my old rust bucket beast.