Acid #9 is a neon magenta with cool undertones and a matte finish. The texture was dry, chalky, and powdery, and the resulting color payoff was semi-sheer and uneven, which made this shade difficult to use. It will stain the skin, and it wears seven hours before I noticed some fading and creasing. Urban Decay Savage (P) is very similar. MAC Magenta Madness (LE, $21.00) is slightly darker. Sugarpill Dollipop (P, $12.00) is more muted, less magenta. Make Up For Ever #75 (P, $20.00) is darker. See comparison swatches.