Makeup That Takes Off 10 Years

Credit: Lisa Shin

Diffuse fine lines

Who needs primer when you've already slathered on moisturizer? You do, actually. "Primers, unlike moisturizers, have smoothing silicones that fill in and soften lines, so your skin naturally reflects light and glows," explains Linter. Plus, primer helps foundation glide on more evenly. This is especially key if your skin is on the dry side. Try CoverGirl & Olay Simply Ageless serum primer ($14; at mass retailers), which has collagen-boosting amino peptides.

Next: Even out your skin