Revlon Illuminance Creme Shadow comes in a cute, sleek black palette with rounded little compartments that hold each creme shadow. When you open it, you see the mirror on the bottom, and the creme shadows are on the top of the palette. Basically, it's like a normal palette but reversed. I like the design since you can easily see the shades through the lid without having to open the palette. The suggested retail price is $6.50, which is very reasonable for 4 shadows.
This palette, Eternal Summer, is a palette that was released as part of the Summer Romantics collection. As far as I can tell, it is NOT limited edition, so don't worry if you can't find it now. It matches perfectly with the nail polishes that were also released in the same collection, specifically: Blue Lagoon, Tangerine, & Sunshine Sparkle. There is no matching nail shade for the green shadow in the palette.
I generally don't love creme shadows because they are so low on pigmentation and don't apply evenly, but Revlon Illuminance seems to be the exception. Illuminance Creme Shadows actually show up on the skin and you can apply an even layer of color. They don't apply patchy and unevenly like some do (I'm looking at you, MAC Big Bounce Shadows).
Though they apply okay without primer, I always use UDPP first...regardless of whether I am using a creme shadow or a powder shadow. I like way that UDPP intensifies the color, allows it to apply even more evenly, and makes it pop more. But also, because I know from experience that everything creases on me due to my oily eyelids, even things that are supposedly creaseless. Unfortunately, these are no different. When I do use these with UDPP underneath, I still notice creasing shortly after application which gets worse over time.
Yes...they do tend to fade, but I find this to be the case with most creme shadows that are shimmery, especially if you're not using a powder shadow over them. If you are able to, you could always carry these with you and touch up throughout the day, since you can easily apply them with your finger.
Another way to use these is bases for powder shadow. They work well this way, and you might like them better this way if you're one of the ones that find these crease and fade on you.
Do you need these? If you have dry-to-normal lids, then yes...you would probably love these. Definitely give them a try since they have nice pigmentation. However, if you have oily lids, you'll want to avoid these since they do crease.