"Hair is almost entirely made up of protein, which gives hair its strength. ALL NEW, paraben-free Fructis formulas with Active Fruit Protein, an exclusive combination of citrus protein, Vitamins B3 & B6, fruit & plant-derived extracts and strengthening conditioners, are designed for healthier, stronger hair. Fructis Sleek & Shine Brazilian Smooth Conditioner, with fairly & sustainably sourced Brazilian Murumuru Butter helps intensely smooth and manage difficult to straighten hair for faster, easier flat ironing and long-lasting smoothness."