Abstract: A doll's hair comprising synthetic fibers to which a water repellent is applied, said fiber having such a water repellency that when a liquid droplet of 20% by weight aqueous isopropyl alcohol solution is placed on the bundle of said fibers, the droplet is kept as it is for not less than one minute on the bundle. Since the doll's hair comprises the fibers having the excellent water repellency, even if a child plays at a doll in a bathroom, for instance, she dips the doll in water, and combs or shampoos the hair, water can be easily removed from the hair, and the original hairstyle can be quickly restored.