NARS Sin is a slightly warm-toned, dark plum with a frost finish. It is a permanent blush that retails for $30.00 and contains 0.16 oz.
NARS Sin Blush ($29.00 for 0.16 oz.) is described as a "berry with gold shimmer." It's a gold-shimmered plum with a frosted finish. It's less red, more plum compared to NARS Oasis. MAC Plum Foolery is lighter but similar. MAC Vintage Grape is purpler. theBalm Cabana Boy is similar--perhaps a smidgen lighter.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
The ultimate authority in blush, NARS offers the industry's bestselling, most iconic shades for cheeks. NARS blush delivers healthy-looking color that enlivens the complexion and provides a natural-looking flush to flatter any skin tone. Iconic shades include a range of translucent, natural tones, each with a subtle pink undertone for a natural-looking blush to highlight the complexion. Silky, superfine micronized powder pigments in matte and shimmering shades ensure irresistibly soft, blendable application. A light application of even the highest-intensity hues delivers a natural-looking flush. These soft, buildable shades deliver a wide range of effects, from ultra-sheer to powerful pops of color.