MAC Copperthorn is a very warm-toned, medium-dark copper with a glitter finish. It is a permanent eyeliner that retails for $16.00 and contains 0.1 oz.
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Copperthorn is described as a "copper bronze." It's a medium-dark copper brown with chunky gold and copper sparkle/glitter. It's extremely chunky and sparkly with more of a sheer base color--the majority of this one is sparkle. I actually found it chunkier than when it was previously released. The majority of the eyeliner seems to stay in place (I can tell where I put it and still see that distinct line after ten hours), but there were glittery bits underneath my eye and on my cheek during wear. Get comparison swatches/ compare dupes side-by-side.
Looking for something similar or to see what you have in your stash? Here are some of the top dupes for this product!