Are primers really necessary?

[aprilpgb22]

I was told that you should put on a primer before you put your actual foundation on? Do you think this is necessary and if so what does it actually do and what are the best brands that won't clog pores and feel weighty on your skin?

 

[emily_3383]

 

[bluebird08]

 

[amanda1210]

 

[veilchen]

 

[tuna_fish]

 

[aprilpgb22]

 

[emily_3383]

 

[aprilpgb22]

 

[Nox]

 

[BeautifullyMADE]

 

[kittykupkake]

 

[KellyB]

 

[empericalbeauty]

 

[lummerz]

 

[SimplyElegant]

 

[Aquilah]