I tried this in the clear, and loved it – now they have an spf 15 and for that reason alone – it is on my website. Basically, if you use foundation – you should be using a primer. It helps keep it in place, and keeps your face from getting all greasy halfway through the day. I have oily skin, so this helps my foundation wear longer. And when you put it on, it makes your skin soft and powdery smooth. Its like a powder gel. Even if you dont wear foundation, this stuff makes your skin look younger and softer. $42 for .98 oz. on http://www.sephora.com/