For humans, haircut, hairstyle, or hairdo normally describe cutting or styling head hair. Unlike other animals, human beings of many cultures cut their hair, rather than letting it grow naturally. Hair styles are often used to signal cultural, social, and ethnic identity. Men and women naturally have the same hair but generally hairstyles conform to cultural standards of gender. Hair styles in both men and women also vary with current fashion trends, and are often used to determine social status.