The global Biotin Nutrition Supplement market—covering vitamin B7 capsules, tablets, soft-gels, powders and functional beverages—addresses rising consumer focus on hair, skin & nail health, metabolic support and healthy ageing. Spurred by social-media wellness trends and escalating self-care spend, Biotin Nutrition Supplement market size is valued at USD 1.9 billion in 2025 with a projected CAGR of 8.4% through 2033, underpinning a robust growth outlook and sustained industry expansion. Scope includes pharmaceutical-grade biotin (≥97% purity) and over-the-counter beauty-from-within formulations sold via pharmacies, e-commerce, mass retailers and direct-to-consumer channels worldwide.