Hair and makeup by Sarah Redzikowski/artist at Wilhelmina, model: Ashlyn/No Ties Management, photos by Christopher DeVargas

Unquestionably, every makeup brand will always have this product and in numerous versions: mascara. The makeup-bag staple comes in endless formulas and varieties, leaving you with the big question: Which one do I need? Knowing key words in a formula can help you decide. A defining mascara coats and defines every single lash. Thickening versions plump up thin or fine lashes. Lengthening ones contain fibers that temporarily build up the length. Curling mascaras contain polymers that shrink as they dry, causing lashes to lift. On top of all those are waterproof and colored varieties, and even primers. Whatever you’re trying to achieve, I can guarantee there is a perfect one for you.

Defining: MAC Pro Beyond Twisted Lash—Twisted Black ($23), MAC at The Forum Shops at Caesars

Thickening: Charlotte Tilbury Full Fat Lashes—Glossy Black ($29), CharlotteTilbury.com

Three in one: NARS Audacious Mascara—Black Moon ($26), NARS at The Forum Shops

Lengthening: Sisley-Paris Mascara So Intense—1 Deep Black ($67), Neiman Marcus at Fashion Show

Curling: MAC Instacurl Lash—Instablack ($23), MAC at The Forum Shops

Waterproof: Tom Ford Waterproof Extreme Mascara—Noir ($45), Neiman Marcus at Fashion Show