MAC Cosmetics Iridescent Loose Powder in Golden Bronze Peachy Brown Shimmer -Brand New In Box -This Product is Sealed on Top - See Picture 8 -Discontinued A finely milled mixture of mica and pigments that gives skin a radiant sheen with a subtle glaze of color and intense pearl. WHAT IT DOES: MAC Iridescent Powder/Loose can be used on its own or mixed into other products like foundations or moisturizers to enhance their iridescent qualities Designed to apply easily and uniformly, it blends beautifully and can be applied on bare skin or over foundation Because it's so concentrated, it should be used sparingly at first