Hello Hair Growth - Hair growth for women and men can be tough but most other biotin vitamins for hair skin and nails don’t have as many hair vitamins for thicker hair growth for men and women as us Unique Complex - Try our one of a kind biotin for hair growth supplement with iron zinc marine collagen and horsetail herb for hair growth for the ideal hair supplement for strength and thickness Star Ingredients - Unlike many other biotin and collagen supplements we use balanced levels of fish collagen for hair growth with horsetail extract and carefully chosen multi vitamins for hair growth