There are primers and there are primers.
I accidentally discovered The Smashbox Photo Finish Foundation Primer during one of Sephora's promotions (one of those in store promo where as a member you spend a "certain" amount of money and you get a free gift...) well I got this primer, and I was forever in Love!!
In my mind this is best primer out there, of course if there is something else please let me know... but I doubt it, so far I have tried several and Smashbox has always come up on top.
PHOTO FINISH FOUNDATION PRIMER creates a perfect canvas for any type of foundation application with this silky, lightweight blend of vitamins A & E, grape seed extract and green tea.
This miracle primer helps to reduce the appearance of fine lines and pores for flawless skin with a velvety-smooth finish.
How to wear it:
1. Alone with a light brush of powder, for a natural even look
2. Under foundation to increase its longevity
3. On Hair to tame frizzies
So there...I use is for all my work, sometimes I use the "light" version depending on the skin quality of my client/model/person/chihuahua.