Another one of the Urban Decay eyeshadow primers have been used up. We all know that all the primers have incredible lasting power and are amazing. The only difference between Sin and the original color is that Sin is a champagne color and is best used with brown/gold tones. For experiment's sake, I tried this under purple and blue eyeshadow as well and the colors are muted and have that brown tinge to them so watch out for that. Overall it's a great product, but I prefer the original formula to this only for the color factor. Again a little went a long way and lasted me about a month with just this little sample.