Generally, a primer fills in fine lines, makes products spread smoothly and evenly and prevents creasing while a base enhances colour and helps accentuate your eyes. Although it seems that there are some eyeshadow bases out there that claim to do both. (For more information on primers, please use this link).
I bought and tried NYX High Definition Eye Shadow Base. Written on the tube it says “Even out skin tone and smooth out lines. Perfect prep for true colour & long lasting eyeshadow. Be camera ready in an instant!” So I gave this product a try. I bought ESB04, which is a pinky, flesh-toned colour and it comes in a sleek, black tube with a little colts foot applicator, although I prefer to dab the product on with my ring finger. Apply a thin, even layer of the product to your eyelids, as a thicker layer may cause your eye shadow to crease. Wait a minute or two for it to dry completely before applying and blending your eye shadow. If you find you have very oily eyelids, you may need to use a primer first, before applying this base and then eyeshadow.
I found the product to be lightweight and easy to apply, with a matte appearance. Eyeshadow colours definitely appear more vibrant and intense, as well as lasting all day without creasing. It’s reasonably priced and a little goes a long way so the tube will last you a while before you need to replace it.
NYX products are available from various online retailers and selected Farmers stores.