Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dreadlocks, also called locks or dreads, are heavy matted coils of hair which form by themselves eventually fusing together to form a single dread. This is possible in all hair types if the hair is allowed to grow naturally without grooming or conditioning for a long period of time. This does not exclude regular removal of debris, as in most hair types oil produced by the scalp prevents the necessary matting, inhibits coil formation, and may result in a polish plait. Dreadlocks can also be intentionally formed; because of the variety of different hair textures, various methods are used to encourage the formation of locks such as backcombing sections of the hair, twisting or a process involving the weaving of the hair with a crochet hook to form knots.Dreadlocks are associated most closely with the recent Rastafari movement, but people from many groups in history before them have worn dreadlocks, including the Hindu Shiva worshippers of India, historic European peoples, vague] and the Sufis of Pakistan.