The Body Part That's Making You Look Older

"People tend to apply daily sunscreen, or at least makeup with some SPF, to their faces, but the neck gets completely neglected until patients start to notice signs of aging, which is often too late," Hale says. A good rule: "Anything you do to your face in regards to skincare should be continued down the neck and include the décolletage," Dyer advises. In the morning, apply an antioxidant serum with vitamin C. This ingredient "stimulates collagen and reduces pigmentation to even out skin and make it appear more radiant," says plastic surgeon Melissa Doft, MD. Finish with an ultrahydrating moisturizer—Dyer is a fan of Chanel's La Solution 10 de Chanel, which is fragrance free (and won't interfere with perfume if you wear it on your décolletage).