Divya Delhi:  People care for their faces but not their necks. This might cause neck skin to loosen and wrinkle faster after 40. Collagen and elastin weaken with age, causing skin to loosen. You can keep your neck young and lovely with some simple steps. Before turning 40, try these five practical strategies. Use glycolic or salicylic acid twice a week to maintain neck skin. These exfoliating acids exfoliate dead skin, regenerate new cells, and minimize wrinkles. Applying them at night works better. Apply a decent moisturizer afterward. Retinoids decrease wrinkles and boost collagen. They deeply heal skin and boost cell turnover, making it look younger. Retinoids can make skin more susceptible to sunlight, so apply them at night and use sunscreen in the morning. Hyaluronic acid and niacinamide moisturisers keep skin moisturized and silky for long periods. Hyaluronic acid retains moisture, while niacinamide tightens and minimizes wrinkles. Both substances help neck skin stay young. Proper eating is essential for healthy skin. Eat antioxidant-rich berries, oranges, carrots, spinach, and sweet potatoes. Walnuts and flaxseed contain omega-3 fatty acids that moisturize and decrease inflammation.