If your hair grows slowly, feels weak, or sheds more than usual — missing vitamins might be the real reason. Your hair relies on specific nutrients to grow strong, thick, and healthy. When even one of these vitamins is low, follicles struggle to stay active — and no topical product can fully compensate. Here’s what these vitamins do behind the scenes: • Vitamin A supports cell renewal and a healthy scalp environment • Biotin (B7) strengthens strands and improves keratin structure • Vitamin C boo