Benefit Cosmetics Stay Flawless 15-Hour Primer Customer Reviews

The 15-Hour Primer really does help foundation last longer. I tested it on half my face, and noticed a significant difference in both the shiny appearance (less with the Primer, more shiny without) and the coverage of my foundation (more coverage on the side with Primer). A little goes a long way. It seems to fill in the fine wrinkles, too.

After watching the adorable video of Katia promoting this product on Birchbox's YouTube channel, I too wanted to stay flawless for 15 hours. It takes a special product to achieve what this one did and I'm happy to say that after my impulse buy, I was truly satisfied. This balm glides on smoothly leaving a cool, tacky residue behind and just enough to hold the weight of my foundation (I recommend Benefit's Oxygen Wow) and bronzer. I'm a Manhattanite myself and this product withstands even the darkest of days.

After trying this Benefit 15-hour primer, I am never going to use any kind of makeup, specially foundation, without it!

The product goes on smooth and helps foundation stay but after a few hours it makes my makeup look uneven. It also makes me breakout in tiny whiteheads. I do have oily skin so maybe that's why it doesn't work well for me.

Purchased this product because I'm often outside and in the heat for my job. It work great on the days that I'm inside the office or only outside for a quick minute. If its a hot day or I'm outside for extended period of time I get extra oily from this product (much more than normal). I do have to say I LOVE it for night time events as it leaves my face looking flawless and holds everything in place.

I've been using this for about a week and am still getting used to the application. It's important to definitely smooth with your fingers to make sure you've covered your entire face, and you have to put your foundation on very shortly after or the primer will kind of solidify. When this happens, I've noticed some discoloration/unevenness. Having said that, as long as you follow the directions, this primer mattifies and locks in make-up very well.

I do not think this lasts 15 hours! By the end of my workday (8 hours) all of my face make-up has vanished. Really bummed, because all the reviews says it does last that long. I love benefit too!

I have very oily skin and have tried other primers. This one is the best I've tried. My makeup looks nearly perfect at the end of the day. Highly recommend!

My make up stays put all day. My days involves a lot of movement and sweat too, so I was extra impressed!
My skin looks flawless with this primer. I have very sensitive skin and am prone to breakouts so I was happy that this product keeps my skin looking great.

I was a little wary when this product promised make-up placement for 15 hours, but it does not fail! I couldn't believe how fresh and beautiful my make-up looked throughout the hot, summer workday. This is by far one of the best beauty products I have ever purchased. If you want your make-up to stay and look fresh all day long, this is a necessity!