MAC's Peachtwist is a Sheertone Shimmer Blush... It was one of my impulse buys on a makeup shopping trip a few months ago. The color is kind of a bronzey peach... It's warm-toned and has some slight shimmer to it. It's a really nice pretty color if you have a nice tan going on- it's kinda peachy brown and has a really nice sheen to it. On me it looks like a nice glowing terra-cotta shade, almost like bronzer. It really warms up the complexion and gives a real beachy feel... I think it's a color that looks much prettier on the skin than in the pan, you know what I mean? If you don't already have it, check it out!!! It might be your perfect Summer-time blush!!