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Buttercream is described as a "light neutral yellow [with a Matte finish]." It's a pale, neutral-to-warm beige with a matte finish. It had fairly good pigmentation, and the texture was very soft and silky, though it almost looked chalky on my medium complexion (should be fine on fairer skin tones). It wore well for eight hours. It's another basic shade, so there are plenty of similar shades out there -- see comparison swatches.
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Talc, Zea Mays (Corn) Starch, Zinc Stearate, Mica, Silica, Dimethicone, Isonoyl Isononanoate, Caprylic/Capric Triglyceride, Dimethiconol, Chlorphenesin, Potassium Sorbate, Synthetic Beeswax, Tetrasodium EDTA. (+/-): CI 77891 (Titanium Dioxide), CI 77491 (Iron Oxides), CI 77492 (Iron Oxides), CI 77499 (Iron Oxides), CI 77510 (Ferric Ferrocyanide), CI 75470 (Carmine), CI 77007 (Ultramarines).