NARS Demon Lover Eyeshadow Duo ($34.00 for 0.14 oz.) is described as a duo of “iridescent storm blue” and “deep matte indigo.” It’s part of NARS’ permanent range of eyeshadow duos. NARS’ eyeshadow formula is supposed to be long-wearing, highly pigmented, and crease-resistant. They can also be used wet or dry. I never get quite crease-resistant, long-wear out of NARS’ eyeshadow formula–typically about six to seven hours of good wear, but slight fading and/or creasing after eight hours. I don’t have any problems over a primer, though.