Vitamins for your Hair Vitamins for your hair may sound crazy, but for those of us in the industry – it’s well known that vitamins play an essential role in maintaining healthy and vibrant hair. Your hair consists of proteins, amino acids and vitamins. The more you use heat or color on your hair – the more you’re stripping away nutrition which is critical in maintaining a healthy head of hair. Diet also plays a huge role and if you’re skipping meals or ingesting less than quality foods – your hair will suffer. The less vitamins and nutrients you give to your hair translates to lack of growth, dull, dry and brittle.