MAC Indigo-go is a very cool-toned, dark blue with a cream finish. It is a limited edition lipstick that retails for $19.00 and contains 0.1 oz.
MAC Indigo-go Lipstick ($17.00 for 0.10 oz.) is a dark, slightly muted, navy blue with cool undertones and a soft, natural sheen. It had good pigmentation--more pigmented than I thought based on the initial swatch--that went on fairly evenly. The consistency had moderate slip, which made it more comfortable to wear over the five and a half hours it lasted. I had a bit of trouble getting the lipstick to adhere well to the center of my lip both times I wore it (once for photos, once for testing), but it seemed to go on fine everywhere else. This shade did stain my lips a bluish-violet after wear, while the formula was slightly hydrating overall.
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.