In paperworld you will find paint thinners, white spirit, Linseed oil, in various packages from well-known Greek and European factories. Protective Varnishes in liquid or spray, fixative, acrylic retarders and many other mediums. Apply a varnish to ensure protection against fading or yellowing colors over time. Apply varnish to a finished acrylic or oil painting to create a matte, satin, or gloss finish. Acrylic polymer and acrylic resin varnishes are ideal for acrylic paintings, while damar varnishes are ideal for use over dry oil paintings. Apply a varnish to ensure protection against fading or yellowing colors over time.