Zinc helps treat acne

Zinc is important nutrient in the management of skin conditions and may assist in healthy tissue regeneration. It has been shown that acne sufferers tend to have lower zinc levels than non-suffers, so it may be wise to introduce zinc mineral supplement to the diet. Oysters contain more zinc per serving than any other food, but red meat and poultry provide the majority of zinc in the American diet. Other good food sources include beans, nuts, certain seafood, whole grains, fortified breakfast cereals, and dairy products.
Sources: 1, 2, 3