Barbara Trombley's Ultrafine art glitter remains unsurpassed in quality. See and feel the difference! Ultrafine, microfine, chunky and flake glitter are mainly cut from polyester films that are so thin you cannot see the dull side of the cut. Some of the ultrafine opaque colors have a mix of metallic glitter in them also. All polyester glitter is acid free and safe for wearing on skin.