With combination/oily skin with enlarged pores, I have tried a lot of primers. I mean, a lot of primers. Without a primer my base will be breaking up within a couple of hours, even in the winter (thank you stupid skin). When I try out a new primer what I'm looking for is something that feels light and unclogging on the skin, doesn't cause breakouts, provides a smooth surface for my foundation, and helps my makeup to stay longer. Smashbox's Photo Finish Foundation Primer LIGHT does every one of these steps incredibly well. The 'Light' formula is made specifically for those with acne-prone or sensitive skin (mine is unfortunately both). It smooths over the skin effortlessly and allows foundation to be applied almost flawlessly. I'm particularly impressed with how well it minimises the appearance of pores, when that's not even one of it's main claims! Not to mention that my foundation holds in place and remains un-cakey for substantially longer over other primers. The tube seems small, for the price of £25, but it's deceptively long-lasting and holds 30ml of product - the same as one of my other favourite primers which comes in at £36. This product is a definite repurchase for me.