The most simple and common version is a flat, solid, three-stranded structure. More complex patterns can be constructed from an arbitrary number of strands to create a wider range of structures (such as a fishtail braid, a five-stranded braid, rope braid, a French braid and a waterfall braid). Twists are also a method that is done. The structure of braids is usually long and narrow with each component strand functionally equivalent in zigzagging forward through the overlapping mass of the others. It can be compared with the process of weaving, which usually involves two separate perpendicular groups of strands (warp and weft).

The oldest known reproduction of hair braiding may go back about 30,000 years: the Venus of Willendorf, a female figurine estimated to have been made between about 28,000 and 25,000 BCE in modern day Austria. The Venus of Brassempouy from the southwest of France is estimated to be about 25,000 years old and show a braided hairstyle.

During the Bronze Age and Iron Age many peoples in the Near East, Asia Minor, Caucasus, East Mediterranean and North Africa such as the Sumerians, Elamites, Ancient Egyptians, Ancient Greeks, Akkadians, Assyrians, Babylonians, Hittites, Amorites, Mitanni, Hattians, Hurrians, Arameans, Eblaites, Israelites, Phrygians, Lydians, Persians, Medes, Parthians, Chaldeans, Armenians, Georgians, Cilicians, Canaanites/Phoenicians/Carthaginians and the Celtic Britons are depicted in art with braided or plaited hair and beards. Similarly, the practice is recorded in Europe, Africa, India, China, Japan, Australasia and Central Asia.

Braiding, twisting, and locking is traditionally a social art. Because of the time it takes to braid hair, people have often taken time to socialize while braiding and having their hair braided. It begins with the elders making simple knots and braids for younger children. Older children watch and learn from them, start practicing on younger children, and eventually learn the traditional designs. This carries on a tradition of bonding between elders and the new generation.

Source: Courtesy of Wikipedia

Scalp skin, just like any other skin on the body, must be kept healthy to ensure a healthy body and healthy hair production. If the scalp is cleaned regularly by those who have rough hair or have a hair-fall problem, it can result in loss of hair. However, not all scalp disorders are a result of bacterial infections. Some arise inexplicably, and often only the symptoms can be treated for management of the condition (example: dandruff). There are also bacteria that can affect the hair itself. Head lice is probably the most common hair and scalp ailment worldwide. Head lice can be removed with great attention to detail, and studies show it is not necessarily associated with poor hygiene. More recent studies reveal that head lice actually thrive in clean hair. In this way, hair washing as a term may be a bit misleading, as what is necessary in healthy hair production and maintenance is often simply cleaning the surface of the scalp skin, the way the skin all over the body requires cleaning for good hygiene.

The sebaceous glands in human skin produce sebum, which is composed primarily of fatty acids. Sebum acts to protect hair and skin, and can inhibit the growth of microorganisms on the skin. Sebum contributes to the skin’s slightly acidic natural pH somewhere between 5 and 6.8 on the pH spectrum. This oily substance gives hair moisture and shine as it travels naturally down the hair shaft, and serves as a protective substance by preventing the hair from drying out or absorbing excessive amounts of external substances. Sebum is also distributed down the hair shaft “mechanically” by brushing and combing. When sebum is present in excess, the roots of the hair can appear oily, greasy, and darker than normal, and the hair may stick together.

Source: Courtesy of Wikipedia