The Metanail Serum Pro formula was developed with dermatological science in mind. Each ingredient is backed by research: Biotin & Keratin Complex: Biotin (Vitamin B7) is crucial for keratin production. Deficiency in biotin can cause brittle nails, whereas supplementation has been shown to improve nail hardness and growth. MSM (Sulfur Source): MSM provides organic sulfur, a building block for collagen and keratin. A scientific review notes that MSM was patented for its nail-strengthening properties. Sulfur helps form disulfide bonds in keratin, making nails harder and less prone to splitting. Antioxidant & Anti-Inflammatory Blend: Green tea extract, rosemary (rich in rosmarinic acid), and vitamins C/E serve as antioxidants that protect nail cells from oxidative damage. They also reduce inflammation, which can accompany fungal infections. For instance, Vitamin C is essential for collagen stability and skin health, while Vitamin E supports cell repair and moisture retention. Natural Antifungal Compounds: Essential oils and botanical extracts in the serum disrupt fungal growth. Scientific studies confirm that tea tree oil has significant antifungal efficacy against common nail pathogens. Similarly, geranium oil (Pelargonium) exhibits antibacterial and antifungal qualities. These ingredients attack the fungus directly, unlike many topical treatments that only suppress symptoms. Cellular Repair and Growth: Ingredients like witch hazel, horsetail, and pine extract stimulate blood flow and nutrient delivery to the nail matrix. Increased circulation brings more oxygen and nutrients, accelerating nail regeneration. As damaged nail tissue is gradually replaced by new, healthy nail, you see continuous improvement in strength and appearance. Together, these mechanisms ensure Metanail Serum Pro not only clears the infection but also restores nail health for the long term. It’s a systemic approach – working at the cellular level to rebuild your nails from within, rather than just temporarily covering up fungus.