Oily skin can also be dehydrated, and aggressively cleansing, skipping moisturizer, or piling on mattifying products can leave you with surface oil and tight, textured skin. Ultimately, “longevity isn’t one miracle product”—it’s the combination of thoughtful skin prep, thin layers, targeted powder, and a great setting spray that keeps foundation intact without sacrificing a natural, dimensional finish, she says. For our review of the best foundations for oily skin, we enlisted the help of multiple editors, writers, contributors, and makeup artists to review the products.