Makeup artist: Debra Ferullo

Celebrity clientele: Demi Lovato, Gwen Stefani

Debra Ferullo says that Flower HydraSilk Ultimate Lip Butter, $7.98, is her all-time favorite lip product. "It's got the perfect glossy finish and it also keeps your lips hydrated," she says.

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Makeup artist: Edward Cruz

Celebrity clientele: Emilia Clarke, Ariana Grande

Edward Cruz sings the praises of Sonia Kashuk Chic Luminosity Highlighter Stick , $10.99, for face and body alike, saying, "This formula will stand up tall next to the best professional highlighting products in the industry." (Cruz knows: he's compared them himself.)

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Makeup artist: Meredith Baraf

Celebrity clientele: Adriana Lima, Lea Michele

The more the merrier -- which is why Baraf reaches for a palette of shades in the same color family. Her top pick? "I love Maybelline Expert Wear Eyeshadow Palette in The Nudes, $9.99," she says.

Makeup artist: Julie Harris

Celebrity clientele: Allison Williams, Elisabeth Moss

"I really love the new Physicians Formula Eye Booster 2-in-1 Lash Boosting Ergonomic Felt-Tip Eyeliner + Serum, $11.95," says Julie Harris. "It goes on easily, doesn't flake, and stays on extremely well." Plus, she adds, the felt tip format makes it easy to control the thickness of the line for those who have a hard time achieving the perfect cat eye.

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