MAC Overnight is a slightly cool-toned, dark black with a matte finish. It is a limited edition eyeshadow that retails for $17.00 and contains 0.05 oz.
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Overnight is described as a "cool black [with a Matte finish]." It's a deep black with cool undertones and a matte finish. It had decent to good color coverage, but I wish it was more blendable. The texture was a little drier and stiffer, and this translated to application as well. It did wear for eight hours, though. See comparison swatches / view dupes.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
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M·A·C Eyeshadow is a highly pigmented powder formula that applies evenly and blends well. Suitable for use either wet or dry, it's available in a wide variety of textures and finishes.