Add some sparkle to your work with Amsterdam glitter flakes! Mix them with gloss mediums (such as acrylic, glazing or gel), transparent paints or use them on top of wet paint. Matt mediums and varnishes will dull the sparkle effect. Amsterdam flakes are available in multi-color (holographic), black, silver and gold. How to use Carefully sprinkle or scoop the flakes from the jar. Avoid breathing in the particles; use respiratory protection if necessary. Apply the glitter on top of wet paint or mix it into mediums, varnishes or transparent paints. To increase the glitter effect, finish your work with a glossy varnish. This will also help keep the glitter in place.