Skip the Collagen Powder: Five Foods Science Links to Better Skin

Women who ate one avocado every day for eight weeks saw measurable gains in skin firmness and elasticity, according to a 2022 pilot study — evidence that skin benefits do not require a collagen powder supplement. That finding sits at the center of a February 10, 2026 report by registered nurse Carrie Madormo, medically reviewed by registered dietitian Lindsey DeSoto, which argues dietary changes can rival the effects of collagen powders on skin elasticity and hydration.

The report identifies five whole foods with research behind them, each acting through vitamins, healthy fats or antioxidants rather than supplemental collagen.

What does each food actually do?

Tomatoes. Tomatoes contain lycopene, a plant pigment with potent antioxidant effects. Antioxidants counter free radicals; when those cell-damaging molecules accumulate, the body enters oxidative stress. Madormo reports that lycopene-rich diets may protect against inflammation, obesity, chronic conditions and skin concerns. Research cited in the article suggests lycopene intake may help prevent sunburn and damage from ultraviolet rays — the damage that leads to wrinkles and age spots. A separate review of research concluded that supplementation with tomatoes or lycopene may help people avoid UV-induced skin redness and aging.

Berries. Like tomatoes, berries carry antioxidants plus other beneficial vitamins. Their phenolic compounds specifically may help protect the skin from UV damage and aging, according to the report. These same compounds may also protect against heart disease and certain cancers.

Avocado. The 2022 study found that women who ate an avocado daily for eight weeks had greater skin firmness and elasticity — meaning skin less likely to wrinkle. The report notes the research base is limited, but the effect could stem from avocados' antioxidant and healthy-fat content. Their unsaturated fats may boost the body's absorption of carotenoids, a class of antioxidant also present in avocados, and carotenoids may concentrate in the skin and improve its appearance.

Almonds. A 2021 study found that women who ate almonds daily showed a reduced appearance of wrinkles and skin discoloration such as age spots. Researchers theorize the effect comes from almonds' high vitamin E — alpha-tocopherol — content, which may help protect against UV damage and heal wounded skin. Almonds also supply alpha-linolenic acid (ALA), an omega-3 fatty acid linked in research to increased skin hydration. Beyond skin, nuts deliver healthy fats, protein and fiber.

Fatty fish. Salmon, anchovies, mackerel and sardines are strong sources of omega-3 fatty acids, which support numerous bodily functions and, per some research, may help protect against cancer, heart disease and cognitive impairment. For skin specifically, the report cites studies linking high fatty-fish diets to improved skin barrier function, greater hydration and less skin damage. Omega-3s may also help with psoriasis, sunburn and eczema, and applied topically they can reduce skin inflammation, according to the article.

Which changes are worth making?

The report's core recommendation is cost-driven: supplements and collagen powders can help, but a less complicated and less expensive option is incorporating more whole, antioxidant-rich foods. Madormo advises adding fruits and vegetables to most meals and snacks, and choosing lean proteins and healthy fats where possible.

Practical combinations from the article:

• Top avocado toast with tomato slices
• Add fresh berries and almonds to oatmeal or a yogurt parfait
• Grill salmon with an almond crust
• Make fish tacos topped with guacamole and diced tomato

The evidence base carries caveats the report makes explicit: avocado research remains limited, and experts are still learning how omega-3s affect skin. The strongest signals — the eight-week avocado trial, the 2021 almond study, and systematic reviews on lycopene and UV protection — all point in the same direction, though. For consumers weighing a collagen powder purchase, the dermatology-nutrition literature increasingly suggests the supermarket aisle may deliver comparable results at a lower cost.