Aside from being as clean (purified) as they are for prayer, male Muslims are expected to refrain from cutting their nails, and trimming their hair and beards. They must also not wear any scent, including deodorant. They have to wear "ihram" clothing, which is a white, seamless garment. Many also shave their head as this is considered hygienic. Most will wait to shave their heads until after they have finished Umrah or Hajj, as this is a requirement to leave the state of "ihram". Female Muslims are also expected to be clean. During the pilgrimage, sexual activity, smoking and swearing are also forbidden.