Prime the skin with an oil-free moisturizing gel
or lotion (like Origins Starting Over, $45; Origins.com). It will help the foundation go on evenly and last longer.
Valerie Monroe, beauty director at O Magazine, answers your most asked beauty questions.
The Petit Family Foundation honors the memories of Jennifer, Hayley and Michaela Petit by continuing the kindness, idealism and activism that defined their lives.
O's Staffers take your beauty questions
Our beauty editor, Jenny Bailly, tries on a made-to-measure foundation.