Zinc is a mineral that that is essential to all living organisms. It supports growth, and is a necessary part of many biological processes, including cell division, protein synthesis and immune function. Humans get zinc from food, especially meat, dairy and fish products. Zinc is also available in vitamin supplements and topical creams. Zinc supplements and topical applications of zinc, usually as zinc oxide, can improve a variety of skin conditions.
Improved Skin Conditions
According to a study published in the journal Acta Dermato-Venereologica, patients with certain skin conditions had reduced amounts of zinc present in their skin, even if blood tests did not indicate a dietary zinc deficiency. Conditions such as acne, psoriasis and Darier's disease--a condition that causes brown, scaly patches on the skin--can be improved by adding extra zinc to the diet, usually in the form of supplements.
Wound Healing
Medline Plus points out that zinc may be helpful in speeding the healing of serious wounds such as chronic leg ulcers, bed sores and surgical incisions. Oral supplements are generally used for healing serious wounds and to promote faster healing in people with compromised immune systems.
Reduced Irritation
Zinc also can improve minor skin irritation from chapping or sunburn, as well as minor rashes, such as diaper rash. Zinc protects the skin as it helps it heal. For treating minor skin conditions, use topical zinc oxide, which is available as a cream or powder.
Sun Protection
Zinc is an essential ingredient in many sunscreens. A thin layer of zinc can protect the skin from UVA and UVB rays, and helps prevent permanent damage such as discoloration, premature aging and melanoma.
Skin Lesions
A zinc deficiency may cause skin lesions and delayed wound healing. Other symptoms include delayed growth and development, lethargy and hair loss. According to the Office of Dietary Supplements, zinc deficiency due to malnutrition is not common in the United States because the mineral is needed only in small amounts.
Some people, however, may have an increased risk for zinc deficiency if they have conditions such as sickle cell disease that decrease the body's ability to absorb the mineral. Vegetarians are at a higher risk because it is more difficult to get sufficient amounts of the nutrient from plant sources. Additionally, foods such as whole grains and lentils that vegetarians commonly eat can block zinc absorption in the body. Pregnant or lactating women who have an increased need for zinc also are more likely to have zinc deficiency.
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