Cosmo nourishing shampoo is enriched with olive oil which is an excellent source of antioxidants that promote scalp and skin health. Olive oil shampoo is the perfect choice for all those looking for shiny, lustrous hair. The core ingredient of an olive oil based shampoo is the natural fatty acids; it helps to prevent loss of moisture. It is the best Hairfall solution . As such, the hair gets a natural glossy shine.