75% of men around the world is shaved daily. If the approximately 25,000 hairs of the beard grow 12 mm each month, most of these men will cut 200 kilometers of hair throughout his life. On the other hand, 50% of European women shaving legs and underarm hair. 30% used electric razor while the rest used the disposable razor.
In the ancient Egypt, Egyptian priestesses and priests should shave the whole body before entering temples. For reasons of aesthetics and hygiene, this practice was also professed by the populace, using depilatory creams women, fire, scraping with a pumice stone, started with thread or aggressive potions lime-based living. Men used knives of flint, copper and iron.
The Greeks believed that a shaved body was the ideal of beauty, youth and innocence. It is therefore, that the higher social classes, will carry out this practice. This custom was moved to the Roman, in quarters public baths for hair removal. There were slaves that depilaban the pubic hair of the courtesans in the brothels.
Alejandro the great forced his soldiers to shave so his opponents could not shoot them beards. In Russia, Tsar Pedro I the Grande forbade its officers who are leaving beard under penalty for disobedience. In Japan, men shave their head to ask for apology. Muslims, both men and women, wax is to keep your body clean. However, Christians consider the depilation of the intimate parts as a sinful Act.
In Spain, in 840 A.d., a famous singer from Baghdad, Ziryab, opened the first beauty Institute in the world in the Andalusian city of Cordoba. He also introduced the short hair in men and the white color of the clothing in summer and imposed the order in meals, with first course soups, meats and fish of a second, and sweets for dessert.

Electric shavers
First razor blades come in the stone age (2.5 million years ago). They consisted of rudimentary stones carved Obsidian whose sharp edges should be cut regularly. Subsequently used copper, which is a soft metal is quickly chipped so it should be rather painful shave. With the calving of the steel, barbers also become surgeons, given the specialization of his technique. In 1927, A.B. grind writes a treatise of shaving in which 14 areas of beard, distinguished by its different stroke.
In 1895, the American King Camp Gillette developed a disposable razor that protects the blade with two metal parts that prevent this moves to the sides and can cut the face. Six years later, along with engineer William Nickerson, invented a blade sharpened by two sides, razor blade that you will persist to the present day and it begins to be marketed in 1904. In its first year, they sold 51 razors and 168 blades. However, during the first world war, the Government of the United States buy 3.5 million razors and 36 million leaves, since beard prevented the use appropriate anti-gas masks. During this period, in the United States, several companies, like Wilkinson, convince women that should epilating underarms to appear more feminine.
In 1971, Gillette developed the first razor disposable two sheets. It was a revolution, to get a better finish, because that first leaf cut and lifted hair, while the second cut it again, but below the level of the skin. Later developed l pivoting head and leaves suspended independently and in 1998, Gillette returns to revolutionize the market of razors to develop one with three leaves, through the application of laser technology. The response of the competition, Schick-Wilkinson, was the appearance of the four leaves.
Currently, razor blades are so sharp the cutting thickness is measured in amstrongs, i.e. in the order of the size of atoms. While the thickness of a hair is amstrongs million-plus, the razor blade is about 300 amstrongs. However, before cutting the hair, this will expire by contact with the blade making then cut off and to recover your vertical State, the edge of hair have a beveled shape, hence growing up you click end. A polymer, politetrafluoruroetileno, also known as teflon, is also used to cover the razor blades of steel in order to reduce abrasion and thus avoid the drag of the hairs.
In 1910, Willis G. Shockey patented the predecessor of the electric razor, a machine whose blades are triggering by a hand-operated crank that lasted some time. In 1923, Jacob Schick, who had already invented razor repetition by the succession of leaves, patented the first machine electric shaver. Eight years later sold its first machine of small for $ 25.

Shaving creams
Dry human hair has the same toughness that a cable of copper of the same thickness, being formed by keratin molecules. In contact with water they lose its hardness since the whole is less dense. Therefore, that water should be used for shaving, and that this is attached, making 70% easier to shave.Should this property be to surfactants, chemical compounds capable of reducing the surface tension of the water, allowing that this can be spread and dampen different types of surfaces. These creams also lubricate the skin preventing blades penetrate beyond the layer of dead epidermis cells and thus cut the living skin, producing the resulting irritation and itching.
The form of icing has also changed over the years. At the beginning of badger hair brushes, were used since they were capable of absorbing much water. Later appeared sprays, an American invention that appeared in the second world war and was used to spray areas for thus killing mosquitoes.