As it happends, I dropped by my local Jean Coutu and got a bunch of the l'Oréal La Couleur Infallible eyeshadows instead, including the Sahara Treasure featured below. I can't compare the formula with any kind of scientific exactitude, since I don't own any of the Armani versions, but seeing as they are sister companies, I can't imagine the difference in quality being that stupendous, especially considering the specific nature of the product. (Though the Armani colors are by far more complex and intriguing, without a doubt.)
I just need to say that I am FASCINATED by the texture on these things. It's just so bizarre. Creamy, but crumbly? Kinda slick, but feels like a powder, sort of? I just want to moosh my fingers into it (and have, as you can see in the bottom picture). Honestly, I think half the appeal of these is the unusual texture.
Though they also get good marks in the performance department. I really dig how these can be applied very sheer, like a fine glimmery wash, or can be layered up for some intense metallic glitz. I have a feeling these missed their calling as the Disco era's most versatile product - fairy AND fierce glamazon.
I don't find these quite hold up to the 24-hour claim. There is a small but noticeable bit of fading after 8-10 hours when worn alone. Over primer though, they get a full day with no problems. I didn't get any creasing from them either way, which is certainly an achievement for anything trying to get one up on my eyelids.
In natural light they look more neutral and champagne-y.
In sunlight and under artificial light, both the gold tones and the metallic finish comes out more.
This is probably one of the more user-friendly of the shades currently available, a neutral gold/champagne beige. One of those shades that is the answer to a lazy (or late-running!) morning. Smooth a little on the lid for a brightening effect, slap on some mascara and you're out the door looking chic and cheery. If your office is very conservative, it can still be used to highlight the inner corner of the eye. It can even be used as a base, to add some peekaboo shimmer under a staid taupe.
Availability: Most drugstores, like Jean Coutu, Pharmaprix/SDM and Walmart. (From what I can tell, the colors seem to have different names in the US, and may possibly be altogether different shades. I could only find this shade on the Canadian site, and it was not listed either on drugstore.com or Target.) Price is anywhere between 6$ and 12$ CAD.
Pros: Build-able, versatile texture. Can be worn alone or as a base, or blended with other Infallible shadows. Super-easy to apply and use, perfect for rushed mornings. This color in particular has a good balance of warm and cool to be easily flattering.
Cons: May require a primer for added longevity. Does not live up to the 24-hour claim for me, though it does feel very comfortable.
(I purchased this item at Jean Coutu.)