Question: what is the best vitamin for hair and nails?
Answer: Biotin. Share on Pinterest. ... 
Other B Vitamins. Other B vitamins are also important for nail health. ... 
Iron. Iron composes the center of red blood cells, which carry oxygen to your organs and every cell in your body — including your nails. ... 
Magnesium. ... 
Protein. ... 
Omega-3 Fatty Acids. ... 
Vitamin C. ... 
Zinc.