With the advancement in technology, the importance of facial recognition in the video camera or in the images has increased due to its effectiveness in criminal identification and the identification of wanted people by using different algorithms and theories, where different hybrid and non-hybrid techniques have been developed to recognize the face through its features. In this paper, the most important technologies that have been developed in the field of face detection are revealed, as the paper provides a detailed explanation of the most prominent systems that have been developed in this field in terms of time, accuracy, results and databases used for this purpose.