MAC Jam Session is a moderately cool-toned, medium purple with a semi-matte finish. It is a limited edition eyeshadow that retails for $17.00 and contains 0.05 oz.
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Jam Session is a medium purple with subtle, cool undertones and a mostly matte finish. It had sheer pigmentation that applied dismally to my bare skin and only marginally less disappointing over primer. The texture was powdery, thin, and drier--not a recipe for eyeshadow perfection. It wore well for six hours on me.
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.