Oh my gosh I cannot say enough wonderful things about this product! It is definitely my new holy grail of foundations. I had been hearing wonderful things about it so I went to my MAC counter to check it out. I tried some of the product on and immediately fell in love. It is water-based, and it glides smoothly onto your skin. And when you put it on, your skin feels kind of "wet" for a second. And the puff it comes with is luxurious! Also, my hyper-sensitive skin has not had any breakout problems. This is a must-buy, along with their new Select Cover-Up concealer. I put this on at noon, and at midnight I still didn't need to touch it up! These are both great finds.