If you think skincare should be applied from the chin to the hairline, I have some news for you: You need to stop neglecting your neck and chest. Not moisturizing below the chin leaves the delicate skin there at risk of early signs of aging—sagging, creasing, an all-around lackluster appearance. These glam neck and chest masks deliver a serum enriched with collagen, hyaluronic acid, and niacinamide to treat sun spots, dryness, and redness.