A special reducer designed for use in Colorbuild 2.1-2.8 and Colorbuild Plus for application on previously unpainted plastic parts on which Primer PO or Plastoflex would normally be sprayed. When using All Plastic Adhesion Promoter, there is no need for flex agent in Colorbuild 2.1-2.8 or Colorbuild Plus. With this addition, the material is now an  elastomeric material and is classified as a "specialty coating".