Glitter Paint Additive Glitter Crystals for Acrylic Paint, Interior & Exterior Walls, Wood, Varnish, Furniture, Matte, Gloss, Satin, Silk – 100g / – Gold Holographic. Quick and Easy to Use – Simply add your desired amount of Glitter Paint Additive to your water-based paint or varnish, mix and apply to see the sparkly magic happen.