Acid #6 is a light-medium, sky blue with a glittery, frosted finish. The texture was chunky, so it didn't apply smoothly, though it still managed to have fairly good pigmentation. It wore well for about eight hours, but I had noticeable fall out. NARS South Pacific #2 (P, $24.00) is more muted, less frosted. MAC Styledriven (P, $21.00) is lighter, less frosted. MAC Divine Blue (LE, $19.50) is more muted. Make Up For Ever #25 (P, $23.00) is a cream product, less glittery. See comparison swatches.