I don’t usually buy primer because I found that anti-chafing creams in drugstores have literally the same formulation and do the same thing. I made an exception for this product because it was sold to me with the Youngblood Liquid Foundation. When I used it with the foundation, I decided that they just didn’t work well together. Maybe it is just my skin type, but the finish doesn’t look flawless and the Youngblood foundation rubs off, no matter how much powder I apply to set it. HOWEVER, I have used this primer with my Dior, By Terry, NARS, Mac, and Laura Mercier foundations, and I am very pleased with its performance. This primer is truly a pleasure to apply, it feels like rubbing liquid silk into the skin. It helps my foundation to glide on and set with a velvety finish. I especially enjoy using this with my Laura Mercier, Mac, and NARS powder foundations, because it helps them stick and give me a truly flawless finish. I feel like it creates a barrier between my foundation so that my foundation does not get trapped in my pores. It helps a small bit to cover enlarged pores, too. I don’t break out at all after wearing this all day, which I adore because my skin is very sensitive and acne-prone. In fact, my skin is abnormally calm after wearing this under my foundation.Another thing I love about this primer is the packaging. The packaging on this product deserves 10 stars. The pump is nice, and delivers a consistent amount of product. The plastic packaging doesn’t feel cheap, it feels durable. It’s lightweight, which makes it easy to stow in a makeup bag or purse, especially because it has a pump and a cap that covers it, so no worries about it getting into my bag. The nice thing about this packaging is that as the product is pumped out, the bottom of the bottle actually moves up, so the rest of the product is pushed up to where the pump can suck it out. Ingenious! I wish my Dior Foundation was packaged like this. Did I mention that the top can also be screwed off?In conclusion, I feel like primer, and especially this primer, is a luxury. It’s something that I can live without. I would repurchase this at a $20 price tag on the basis that the packaging is ingenious and a pleasure to use, and that it calms my skin. Otherwise, I could skip it.