After 40, skin naturally begins to change as collagen production slows, moisture levels can dip, and factors like hormonal shifts, stress, and sun exposure become more noticeable. A consistent skincare routine is still one of the best ways to support your complexion, but what you put into your body matters, too. Certain nutrients play important roles in collagen formation, hydration, antioxidant protection, and the normal processes that help skin stay strong and healthy.
Supplements aren’t a magic shortcut to younger-looking skin, and they can’t replace basics like sunscreen, a balanced diet, and good skincare habits. But when used appropriately, they can help fill nutritional gaps and provide your skin with nutrients it needs to function at its best. We rounded up six supplements that are often recommended for prioritizing after 40 to support healthier, more hydrated skin from within.
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1. Probiotics
Healthy skin and a healthy gut are connected. Probiotics help support a balanced gut microbiome, which plays a role in immune function and the body's inflammatory response. Research also points to a gut-skin connection, and suggests that supporting beneficial gut bacteria may help maintain the skin barrier and potentially improve concerns like dryness or sensitivity.
2. Fish Oil
Fish oil is rich in omega-3 fatty acids, particularly EPA and DHA, which support heart and brain health while offering potential benefits for skin, too. Omega-3s help support the skin's lipid barrier, which is important for holding onto moisture and keeping environmental irritants out. Their anti-inflammatory properties may also help support calmer skin.
3. Hyaluronic Acid
You may recognize hyaluronic acid as a popular ingredient in moisturizers and serums, but it's also available as an oral supplement. Hyaluronic acid is a substance naturally found throughout the body that has an impressive ability to bind water, making it important for skin hydration and joint health. Because the body's natural hyaluronic acid levels can decline with age, supplementing may provide additional support for plump, hydrated-looking skin.
4. Vitamin C
Vitamin C is an antioxidant with an especially important role in skin health because the body needs it to produce collagen, the structural protein that helps give skin its strength and firmness. It also helps protect cells from oxidative stress caused by free radicals. Most people can get plenty of vitamin C from foods such as citrus fruits, berries, bell peppers, broccoli, and kiwi, but a supplement may be useful for someone who isn't consistently meeting their needs through food.
5. Astaxanthin
Astaxanthin is a naturally occurring carotenoid antioxidant responsible for the reddish-pink color of foods like salmon and certain types of algae. It's gained attention in the skincare world because antioxidants help combat oxidative stress, one of the factors involved in visible skin aging. Small studies suggest astaxanthin supplementation may support skin elasticity, hydration, and texture and help protect against some effects of UV-related oxidative damage.
6. Collagen Peptides
Collagen provides much of the structural framework that keeps skin strong and resilient, but the body gradually produces less of it with age. Collagen peptides are broken-down forms of collagen that are easier for the body to digest and absorb, providing amino acids used to build proteins throughout the body. Regular supplementation with hydrolyzed collagen peptides may slightly improve skin hydration and elasticity and reduce the appearance of fine lines in some people.
