Improves Skin Hydration Healthy, hydrated skin depends on a steady supply of nutrients that support the skin barrier, collagen structure, and moisture retention. Hair/Skin/Nails formulas are typically packed with vitamins , minerals, and amino acids that work from the inside out to enhance these processes. Key ingredients such as vitamin C, zinc, and copper help build and stabilize collagen and elastin, which keep skin firm and supple. Hyaluronic-acid boosters and silica improve the skin’s ability to hold water, while antioxidants like vitamin E combat free radicals that can damage lipids in the skin barrier and lead to dryness. Some formulas also include omega-rich oils or herbal extracts that support a healthy lipid layer. When used consistently and combined with adequate water intake and a balanced diet, these supplements can make skin appear plumper, smoother, and more radiant by improving its natural moisture balance from within.