What are the best vitamins for keeping your hair, skin, and nails healthy/stimulate growth for hair and nails?

I know Biotin is a big one, any other suggestions?|||Get some silica powder... It works wonders!|||Here ya go|||you don%26#039;t have to be pregnant to take prenatal vitamins....they are a great multi vitamin and will help with all those things|||biotin pills|||www.vitabiotics.com/perfectil