This is the Rolls Royce of primers but it definitely delivers and gives a perfectly smooth "photo finish" and helps your foundation to stay in place and look good all day or all night.
It does not have a particularly strong fragrance and it has never irritated my skin which can tend to be a little bit sensitive. I have used it under Smashbox foundation and under Clinique and it has worked well with both.
It is expensive for a small tube so I don't use it every day any more. I prefer to save it for job interviews and special occasions.
You don't need to use very much - start with a little bit and then add a little more if you need it. If you squirt out too much, you can't get it back in the tube so it will go to waste.
$70 odd is a big investment for a small non description tube of see through product!.... I tried a week with primer, and a week without- using the primer it seems to smooth my skin, and my foundation sets so very much better with a less dewy and oily finish.
Tips: Just a pea side amount is all I use- a little goes a long way!!!