Sin is a stunning champagne pink, with an elegant sheen. It's all good things an eyeshadow should be: buttery, blendable, smooth, velvety, long-wearing (especially with a primer), and has no fallout, in my experience. It's great as a highlight shade, or for an all-over colour (better yet, paired with a complimentary crease colour). It doubles as a cheek highlight, if you're in a pickle. It's by far one of my favourite Urban Decay shades (it must be a lot of people's favourites - it's in so many of their palettes!). I would both repurchase and recommend.

Sin is a gorgeous eyeshadow. It is a light pink champange pearly color. It lasts forever especially with udpp. It blends so well and is great on the lid or used in the corner. <3

First of all...always use UDPP to get the most of this, like any, shadow. The texture of this eyeshadow is fantastic. I use it almost every day. It can be used in varying intensities on your entire lid. Wakes up my appearance and can be used with any other color. It's a HG, I'll never be without it!

This eyeshadow has been my favorite for the past 3 years and it's been used every single day of my life. No joke. For my NC30-35 skin tone, this is the perfect highlighter for the inner corner of my eyes and my brow bone. Its extremely pigmented with a beautiful metallic sheen (NOT glitter) and extremely smooth. I have tried to dupe this many times but haven't been very successful.

The only and I think biggest con to this eyeshadow is the packaging. I always buy the full size and each time, the only reason I go back and buy another one is because it shatters. I have had to buy the full size eyeshadow 5 times because it would shatter into a million pieces even at the slightest touch. This is very irritating and a waste of money! I hope Urban Decay changes this asap because the packaging is complete crap. For a $17 eyeshadow, the packaging should not be made from cheat plastic that breaks constantly. Other than that, the product itself gets 5 stars.

Got this colour in the Naked Palette (yes, I've found it ;)
Try it on cheeks as highlighter: so cool.
Perfectly ordinary shade, a kind of passe-par-tout.
Great quality texture: velvety and well pigmented, as always for Urban Decay eyeshadows.

This may very well be my #1 favourite shadow of all time.
I use it on my lid as it brightens the skin and makes me look more awake. The nice thing is that its only slightly lighter than my skin so it doesn't look harsh or white/tacky/cheap on my lid.
You can put literally anything in the crease or outer corner with this shade on your lid. It's just a beautiful, cool light champagne.

This color was part of a palette that I bought recently, and is by far the best color in the bunch. I will definitely re-purchase this color separately. Love the color, the pigment, the texture...everything. Excellent stuff. Wish I would have discovered UD sooner.

This is such a beautiful color. It works great as a highlight but it also looks wonderful as an all over lid color. I have it in the naked palette and I would definitely repurchase it on its own. It is stunning, amazing quality and very pigmented!

I got this in my Naked palette and it's one of my favorite shades in the palette. It's just so pretty! It's also one of the shades that doesn't pull extremely warm on me, so it's very flattering and I can see it working for many different skin tones.
Looking at it in the pan I expect it to be a glitter bomb but I think it's more shimmery. If I want it to be noticeably shimmery I wear it on its own, but if I wear it over Wet 'n Wild Brulee very lightly it gives just a hint of shimmer.
The formula is spot-on, easy to blend and lasts well (I use UD Primer Potion anyway), it's a wonderful shadow. When/If the pan in my Naked palette runs out, I'd buy this shadow again in a heartbeat.

Sin is such a pretty colour, but on my NC25 skin, it shows up mainly as shimmer with a cool pinky peach undertone. I definitely prefer MAC All That Glitters and would recommend this one to warmer skin tones, whereas I would recommend UD Sin to cooler skin tones. Just be warmed that its very shimmery (but I do not experience fallout) if shimmer is not your thing.