Zinc is an essential trace element necessary for proper immune function. It helps maintain the integrity of skin barriers as well as mucosal membranes, which serve as our body’s first line of defense against pathogens. Furthermore, it supports various cellular processes such as DNA synthesis, protein production, wound healing, and cell division, and it plays a vital role in maintaining proper immune function by supporting the production of essential hormones like thymulin. 
Zinc thymulin, a metallopeptidic hormone secreted by TECs (Thymic Epithelial Cells), is vital for stimulating the differentiation of both intra- and extra-thymic T cells. It stimulates the release of growth hormones, prolactin, luteinizing hormone, and follicle-stimulating hormone.
Zinc thymulin’s impact extends beyond just preventing hair loss; it also modulates cytokine production in splenocytes (white blood cells). According to a study published in Cellular Immunology, these modulation effects help regulate inflammation and promote healthier skin and scalp conditions conducive to optimal hair growth.