You’ve probably heard that your skin is your largest organ, but how much attention do you give to taking care of it? It takes more than just applying lotion to keep your skin healthy and looking good. What’s on your plate makes a huge difference, too! Walnuts, fish, sweet potatoes, and avocados are four foods to add to your skincare regimen.

Walnuts are a superfood for healthy skin. They are packed with omega-6 and omega-3 fatty acids, which can help balance out inflammation. Plus, a single ounce of walnuts can contain up to 8 percent of the daily value for zinc, which helps heal wounds and combat inflammation . Walnuts also have selenium and vitamin E , which can prevent wrinkles and reduce sun damage , respectively. 

Fish is great for your skin, specifically fatty fish like mackerel, herring, and salmon. These are rich sources of omega-3 fatty acids, which can keep skin supple, moisturized, and less sensitive to damage from UV rays. Fish also contain vitamin E, protein (which is useful for maintaining your skin’s integrity and strength ), and zinc.

Sweet potato isn’t just a Thanksgiving side. Add it to your regular diet for a skin boost! Sweet potatoes contain carotenoids , which can help prevent dry skin, sunburn, and cell death. They also contain beta carotene , an antioxidant your body can turn into vitamin A. 

When you dip a chip in guacamole, you’re helping your skin! One study found that a high intake of the healthy fats in avocados may lead to springy and supple skin . Avocados also contain vitamin C, which your body uses to make collagen, a protein that helps your skin stay healthy and strong . Vitamin C also protects your skin from oxidative damage caused by the environment , which can make your skin look aged . 

When it comes to skin, it’s not just what’s on the outside but on the inside that counts. Eating a healthy diet can help keep your skin healthy and glowing. As you work toward a well-rounded diet, start with walnuts, fish, sweet potatoes, and avocados. Your skin will thank you for years to come.