From Sephora's website:
This clean, satin-finish formula helps keep makeup looking fresh and prevents fading. Veil Mineral Primer also absorbs excess oils and minimizes the appearance of pores by evenly distributing light to help hide and soften skin imperfections and fine lines.
Overall, I'm very impressed with this product. I am considering putting down $52 on the full size, but I have a few other primers to check out (trying to use up samples is getting tiring, but I want to start reducing the amount of clutter, and scads of samples take up a lot of room).
Ingredients: Cyclopentasiloxane, Isododecane, Polysilicone-11, Polymethylsilsesquioxane, Hexyl Laurate, Peg-10 Dimethicone, Polyglyceryl-4 Isosterate, Stearic Acid, Alumina
(I was amazed at how short this list is!)