Her star-powered tips will up your makeup game.

Celeb makeup artists are Hollywood's confidants - they see it all, hear it all, and keep it all on lock better than a government server. But we did get one of the best, Molly R. Stern (whose clients include Lily Collins and Reese Witherspoon), to dish on what really matters: the makeup!

What's the most stolen product from your kit?

"L'Oreal Paris Color Riche Balm in Heavenly Berry. It gives lips a just-bitten, pink flush and looks amazing on all skin tones." ($8, amazon.com)

What's the most overrated makeup trick?

"Contouring! It requires a lot of skill—on most people it just looks like dirt. Instead, tap a pearlescent highlighter, like Kjaer Weis Radiance Highlighter, super quickly along your cheekbones; it's a foolproof way to create a lifted effect." ($56, kjaerweis.com)

If you have time to add only one thing to a face, what is it?

"Blush makes everyone look more youthful. Pick a tone your skin naturally turns—rose, peach, etc.—but go for the brightest version of that to bring the radiance." Stern loves to fake a flush with Nars Cosmetics in Sex Appeal ($30, narscosmetics.com).

What's a pricey product that's worth every penny?

"Chantecaille Future Skin Foundation has a veil-like finish that covers imperfections while letting your skin underneath shine through. Plus, it looks the same from the second you put it on until you take it off. Rare!" ($75, barneys.com)

Check out some of the craziest DIY beauty trends of all time:

This article originally appeared in the March 2017 issue of Women's Health. For more genius beauty ideas, pick up a copy on newsstands now!