Makeup artists use what they know is best to keep their celebrity clients looking fabulous.
But they don't always go for the most exclusive and expensive products.
In fact, one particular $8 drugstore mascara is all the rage with Kardashian makeup artists.
It's none other than L'Oréal Paris Voluminous Mascara in Carbon Black.
Makeup artist Mary Phillips helps Chrissy Teigen and Jennifer Lopez for the red carpet.
