Do ghosts wear masks

Ghosts rarely show themselves to us. When they its when we least expect it, like on photographs. They do not wear masks, they may show up as orbs, ectoplasm's (shapeless mists) or they look like a normal person, just pale and see through. In the case of ghosts in photographs, most of the people never notice anything abnormal while taking the pictures. Then they get them development so the spirits appear. ghost don't wear mask and they do show there face at some people.