There is some research suggesting that taking vitamins A, C, and E in supplement form may have skin-saving benefits. They’re all antioxidants that may prevent or delay some types of skin cell damage. But unless you’re deficient in any of these vitamins, you can get what you need from a well-balanced diet that includes fruit, vegetables, nuts, dairy, and fish. (In fact, excessive amounts of vitamins A and E, particularly from supplements, might even be dangerous.) Also, there’s more solid research on the benefits of applying these vitamins topically, and they can be found in a variety of skin-care products.
You may be curious about collagen supplements, which are often touted to help reduce the depth of wrinkles and restore the structure of the skin. Research on safety and efficacy is still in the early stages, but some reports look promising. (However, it’s fine to consume foods that contain collagen, like bone broth.