When it comes to eye primers, I've never had much success. The best one I've used is Urban Decay's Primer Potion bit its not perfect. I find it can make powder shadows look a little dry. My eyelids are oily so I need to use a primer otherwise any product wears off after a few hours!
The Rimmel exaggerate undercover primer is a fairly new product. Its great to see 'drugstore' brands making primers as there aren't many around.
The primer is a pearlescent white cream that's lighter than UDPP. I'd say the consistency is similar to ELF's mineral primer (original) - not too watery but not too thick either. It takes a few minutes for the primer to dry. I prefer a primer to dry completely before I add shadow.
Does it work? I'm really on the fence! Under MAC paint pots it works really well but when I apply under powder shadow, the shadow ends up fading and wearing off after a few hours.
My eyelids are so oily though that I think this would work better on normal skin tones. I'll keep using this under paint pots but for powders I'll stick to Urban Decay.
The Rimmel shadow primer is currently £3.99 at boots.
Have you tried this or do you have any primers you would recommend?