The Vitamins for Hair Growth segmentation by type categorizes products into distinct biochemical families, each contributing a measurable share of total consumption. Biotin (vitamin B7) remains the dominant subtype, accounting for roughly 40 % of sales due to extensive clinical literature linking it to keratin synthesis. Vitamin D and Vitamin E together represent about 20 % of the market, reflecting their roles in follicular cycling and oxidative stress mitigation. Mineral‑based subtypes such as Zinc, Iron, and Selenium collectively capture 15 % of revenue, driven by their involvement in enzymatic pathways that sustain hair shaft integrity. Collagen and Marine‑derived peptides constitute a 10 % segment, appealing to consumers seeking protein‑based structural support. Finally, Herbal blends—including saw palmetto, ginseng, and rosemary extracts—occupy the remaining 15 % and are differentiated by synergistic phytochemical claims. Quantifying these sub‑categories enables analysts to map price elasticity, supply chain risk, and R&D focus, thereby refining the overall market sizing model.