Retention of chlorine and hypochlorite in hair is reduced by treating the hair with a defined composition, allowing the composition to remain on the hair for at least 10 seconds, and then rinsing off the composition with water. The composition comprises at least 1% by total weight of the composition of potato particles having an average diameter of less than 10 microns when dried; at least 1% by total weight of the composition of clathrate; at least 1% by weight of surfactant; and water.