"They're the most natural-looking false lashes I've ever found," says Troy Surratt. Like most pros, he uses the knot-free individual lashes, but strips may be easier for the laywoman to apply. (See how Gayle King does it.) Most makeup artists use Duo Eyelash Adhesive ($6)—it holds lashes in place all day but lets you peel them off easily at night.
$4 for 56, sallybeauty.com