Hormone replacement therapy (HRT) for transgender and transsexual people replaces the hormones naturally occurring in their bodies with those of the other sex. However, not all cases of hormone replacement therapy are used by transgendered people. Some reasons for this include men who wish to have a hair-free body, as a result of less of the testosterone, androgens in their body. Its purpose is to cause the development of the secondary sex characteristics of the desired gender. It cannot undo the changes produced by the first natural occurring puberty of transgender people, this is done by sexual reassignment surgery and for transwomen by epilation. Some intersex people also receive HRT, either starting in childhood to confirm the gender they were assigned, or later, if this assignment has