For big, beautiful, bouncy hair, use DALLAS that includes Biotin, Pro vitamin B5, Saw Palmetto Berry Extract. Ideal for fine and flat hair. This thickening shampoo adds vitality to fine, flat hair while nourishing and strengthening from root to tip. Biotin, improves the keratin infrastructure of hair. Increases hair strength and vitality. Pro Vitamin B5, penetrates hair and provides intense hydration. Coats strands and adds a natural sheen. Coconut Oil, helps to strengthen and condition hair. Promotes scalp health. Adds luster, shine and softness to the hair and prevents hair breakage and split ends.