A hood is a BDSM gear used to cover the head of a submissive. Its main purpose is to conceal the identity of the sub. This gives them more freedom to let go of inhibitions and enjoy the sex scene. It may also be used to deprive the submissive's senses, making him or her feel more vulnerable. For the scene's dominant party, a hood can help conceal the submissive's person, making it easier to objectify them.