MAC Just a Bite is a moderately cool-toned, dark red with a satin finish. It is a limited edition lipstick that retails for $19.00 and contains 0.1 oz.
Just a Bite Lipstick ($15.00 for 0.10 oz.) is described as a "mid-tone blue red [with a Satin finish]." It's a medium-dark, cool-toned red with blue undertones and a natural sheen. It had mostly opaque color coverage, and I expect it would wear between five and six hours with some staining. MAC has released reds like this before. NARS Mascate is more matte. MAC Such Flare is more matte. MAC Runaway Red is slightly lighter. Guerlain Liu is pinker. MAC Absolute Power is also similar. See comparison swatches.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
Formulated to shade, define and showcase the lips, M·A·C Lipstick is available in every nuance of your favorite color and high-fashion texture. It's the iconic product that made M·A·C famous. AMPLIFIED CREME (A): Ultra-creamy. Quietly shiny. Color-packed! Hi-res: hi-impact. CREMESHEEN (C): Creme-based lipstick that imparts bright full color, with a soft and supple shine. FROST (F): Excellent color payoff with medium to high frosted shimmer-and-shine finish. LUSTRE (L): Demi-sheer with wet-look lustre finish. Very slick. Makes lips look soft, smooth, ultra-moist. MATTE (M): Pigment rich with intense color pay-off. No-shine, all matte finish. SATIN (S): Color-rich. Soft satin, semi-matte finish. Conditions while adding intense color.