The micronutrient essential for wound healing is zinc. It plays a critical role in cellular function, supports the immune system, and facilitates the synthesis of proteins necessary for skin repair. Zinc is also involved in the production of growth factors and cytokines that promote wound closure and tissue regeneration. Additionally, it aids in the repair of DNA and protein structures, making it vital for the healing process. Supplementing with zinc, especially in those with deficiencies, can significantly accelerate wound healing.