Eat a diet high in foods containing omega-3 fatty acids. These include salmon, flax seeds, nuts and soybeans. Biotin also is good for hair. Liver, eggs, Swiss chard, nuts and soy are rich in biotin.
Use a high quality shampoo. Poor quality shampoos may break or damage hair. Talk to a hair care professional to find specialty shampoos. Some contain biotin and silica for treating fine, thinning hair.