For mature women, Aucoin says that as the shape of the eye “softens,” more defining might be necessary. Keep the intensity on the upper lashline by using smudged shadows and using less for the undereye area. Try an all in one primer, shadow, and liner in pencil form for ultimate versatility. Stila’s formulations somehow manage to be waterproof but still very creamy, workable, and long-wearing. Stila Smudge Crayon Waterproof Eye Primer + Shadow + Liner, $16, available at Stila.