What role does Zink play in Haut?

The provided contexts contain no specific studies or data on the role of zinc in skin. Generally, zinc is an essential trace mineral important for skin health: it supports wound healing, has anti-inflammatory effects, and is involved in collagen synthesis. Zinc deficiency can lead to skin issues like acne, eczema, or delayed wound healing. However, these statements are based on general physiological knowledge, not on the sources given here. The contexts mention neither zinc tests nor specific genetic variants affecting zinc metabolism in skin. Therefore, the evidence from the given material is classified as unclear or mechanistic. Consumers should note that direct-to-consumer tests regarding zinc and skin often rely on weak evidence. A balanced diet or targeted supplementation should only be undertaken after consulting a physician, especially in the presence of existing skin conditions.