Lemon Aid is a eyelid primer. You apply the very creamy, yellow primer right onto your eyelids, the inner corner, your brow bone, and even as a dark circle concealer.
Take a look at the following picture:
Granted these aren't my eyes, but that is the exact effect I got.
When I was researching this product, I'd heard mixed things about using Lemon Aid as an eyeshadow primer. However, after only 8 days, I think this is my new staple product. My eyeshadows last all day, without creasing. My shadows are a lot more definitive as well.
If you aren't sure about using it for a primer, at least consider it for your dark circles :)
