As the name would suggest, this is a primer that makes your skin glow. It comes out as a white, runny liquid that blends to give your skin a beautiful glow. I like mixing this with my foundation; I have really dry/dehydrated skin, with dry patches on my cheeks and my forehead, and this allows me to wear other foundations that I normally cannot because of my dry skin. It doesn't make my face look oily either. I have also tried this alone (i.e. putting it on before my foundation) and I find that I like it better mixed with my foundation. It comes in a little squeeze tube; I would be careful as this primer is actually pretty runny. But overall, I would really recommend this if you're looking to try one of these illuminating primers; it was $14 at Ulta, which, in my opinion, is steeper than other drugstore options, but I think it is worth the money.