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Hair Dying
Hair coloring, or hair dyeing, is the practice of changing the hair color. The main reasons for this are cosmetic: to cover gray or white hair, to change to a color regarded as more fashionable or desirable, or to restore the original hair color after it has been discolored by hairdressing processes or sun bleaching. Hair coloring can be done professionally by a hairdresser or independently at home. Today, hair coloring is very popular, with 75% of women and 18% of men living in Copenhagen having reported using hair dye (according to a study by the University of Copenhagen). At-home coloring in the United States reached $1.9 billion in 2011 and was expected to rise to $2.2 billion by 2016. History Diodorus Siculus, a Greek historian, described in detail how Celtic people dyed their hair blonde: "Their aspect is terrifying... They are very tall in stature, with rippling muscles under clear white skin. Their hair is blond, but not naturally so: they bleach it, to this day, artifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Walnut
''Juglans nigra'', the eastern American black walnut, is a species of deciduous tree in the walnut family, Juglandaceae, native to North America. It grows mostly in riparian zones, from southern Ontario, west to southeast South Dakota, south to Georgia, northern Florida and southwest to central Texas. Wild trees in the upper Ottawa Valley may be an isolated native population or may have derived from planted trees. Black walnut is an important tree commercially, as the wood is a deep brown color and easily worked. Walnut seeds ( nuts) are cultivated for their distinctive and desirable taste. Walnut trees are grown both for lumber and food, and many cultivars have been developed for improved quality wood or nuts. Black walnut is susceptible to thousand cankers disease, which provoked a decline of walnut trees in some regions. Black walnut is anecdotally known for being allelopathic, which means that it releases chemicals from its roots and other tissues that may harm other orga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half
One half ( : halves) is the irreducible fraction resulting from dividing one by two or the fraction resulting from dividing any number by its double. Multiplication by one half is equivalent to division by two, or "halving"; conversely, division by one half is equivalent to multiplication by two, or "doubling". One half often appears in mathematical equations, recipes, measurements, etc. Half can also be said to be one part of something divided into two equal parts. For instance, the area ''S'' of a triangle is computed. :''S'' = × perpendicular height. One half also figures in the formula for calculating figurate numbers, such as triangular numbers and pentagonal numbers: : \frac and in the formula for computing magic constants for magic squares : M_2(n) = \frac \left(n^ + 1\right) The Riemann hypothesis states that every nontrivial complex root of the Riemann zeta function has a real part equal to . One half has two different decimal expansions, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cortex (hair)
The cortex of the hair shaft is located between the hair cuticle and medulla and is the thickest hair layer. It contains most of the hair's pigment, giving the hair its color. The major pigment in the cortex is melanin, which is also found in skin. The distribution of this pigment varies from animal to animal and person to person. In humans, the melanin is primarily denser nearer the cuticle whereas in animals, melanin is primarily denser nearer the medulla Medulla or Medullary may refer to: Science * Medulla oblongata, a part of the brain stem * Renal medulla, a part of the kidney * Adrenal medulla, a part of the adrenal gland * Medulla of ovary, a stroma in the center of the ovary * Medulla of t ....James, William; Berger, Timothy; Elston, Dirk (2005) ''Andrews' Diseases of the Skin: Clinical Dermatology'' (10th ed.). Saunders. Page 8. . References Hair anatomy {{Dermatology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuticle
A cuticle (), or cuticula, is any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection. Various types of "cuticle" are non- homologous, differing in their origin, structure, function, and chemical composition. Human anatomy In human anatomy, "cuticle" can refer to several structures, but it is used in general parlance, and even by medical professionals, to refer to the thickened layer of skin surrounding fingernails and toenails (the eponychium), and to refer to the superficial layer of overlapping cells covering the hair shaft ( cuticula pili), consisting of dead cells, that locks the hair into its follicle. It can also be used as a synonym for the epidermis, the outer layer of skin. Cuticle of invertebrates In zoology, the invertebrate cuticle or cuticula is a multi-layered structure outside the epidermis of many invertebrates, notably roundworms and arthropods, in which it forms an exoskeleton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonia
Ammonia is an inorganic compound of nitrogen and hydrogen with the formula . A stable binary hydride, and the simplest pnictogen hydride, ammonia is a colourless gas with a distinct pungent smell. Biologically, it is a common nitrogenous waste, particularly among aquatic organisms, and it contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to 45% of the world's food and fertilizers. Around 70% of ammonia is used to make fertilisers in various forms and composition, such as urea and Diammonium phosphate. Ammonia in pure form is also applied directly into the soil. Ammonia, either directly or indirectly, is also a building block for the synthesis of many pharmaceutical products and is used in many commercial cleaning products. It is mainly collected by downward displacement of both air and water. Although common in nature—both terrestrially and in the outer planets of the Solar System—and in wide use, ammonia is both caust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dip Dye
Dip dye (also known as tip dyeing) is a hair coloring style that involves dipping the ends of the hair into dye. The dye used can be naturally or brightly colored, the latter being the more popular choice. The method has become increasingly popular as a result of social media and use by celebrities. Dip dye originates from the process of tie dyeing clothing (especially T-shirts). Dip-dyeing and the ombré hairstyle are similar. However, dip dyeing usually involves brighter neon colors and a less smooth gradient in color than an ombre style, which is typically a more blended and natural coloration. Another similar hair coloring technique that is confusing is balayage because it is so similar to Ombré, but looks like "growing-out" highlights. Trends Dip dye hair is one of the biggest trends of the decade with hairstyles. Many celebrities have been seen with this idea of color fading in the hair. Celebrities like Lea Michele and Vanessa Hudgens Vanessa Anne Hudgens (; bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Straight Hair With Highlights
Straight may refer to: Slang * Straight, slang for heterosexual ** Straight-acting, an LGBT person who does not exhibit the appearance or mannerisms of the gay stereotype * Straight, a member of the straight edge subculture Sport and games * Straight, an alternative name for the cross, a type of punch in boxing * Straight, a hand ranking in the card game of poker Places * Straight, Oklahoma, an unincorporated community in Texas County, Oklahoma Media * ''Straight'' (Tobias Regner album), the first album by German singer Tobias Regner * ''Straight'' (2007 film), a German film by Nicolas Flessa * ''Straight'' (2009 film), a Bollywood film starring Vinay Pathak and Gul Panag * "Straight", a song by T-Pain on the 2017 ''Oblivion'' (T-Pain album) * "Straight", a song by A Place to Bury Strangers on the 2015 album ''Transfixiation'' * Straight Records, a record label formed in 1969 * ''The Georgia Straight'' (straight.com), a Canadian weekly newspaper published in Vancouver, British ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Schwarzkopf GmbH
AG & Co. KGaA, commonly known as Henkel, is a German multinational chemical and consumer goods company headquartered in Düsseldorf, Germany. It is active in both the consumer and industrial sectors. Founded in 1876, the DAX company is organized into three globally operating business units (Laundry & Home Care, Beauty Care, Adhesive Technologies) and is known for brands such as Loctite, Persil, Fa, Pritt, Dial and Purex, amongst others. In the fiscal year 2021, Henkel reported sales of around 20 billion euros and an operating profit of 2.213 billion euros. More than 85% of its 52,450 employees work outside of Germany. History The company was founded in 1876 in Aachen as Henkel & Cie by Friedrich Karl Henkel (a 28-year-old retailer of chemicals and paint who was interested in industrial chemistry) and two more partners who were owners of a factory producing sodium silicate (water glass). They marketed his first product, "Universalwaschmittel", a universal detergent based on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
L'Oréal
L'Oréal S.A. () is a French personal care company headquartered in Clichy, Hauts-de-Seine with a registered office in Paris. It is the world's largest cosmetics company and has developed activities in the field concentrating on hair color, skin care, sun protection, make-up, perfume, and hair care. History Founding In the early 20th century, Eugène Paul Louis Schueller (1881–1957), a young French chemist, developed a hair dye formula called ''Oréale''. Schueller formulated and manufactured his own products, which he then decided to sell to Parisian hairdressers. On 31 July 1919, Schueller registered his company, the Société Française de Teintures Inoffensives pour Cheveux (Safe Hair Dye Company of France). The guiding principles of the company, which eventually became L'Oréal, were research and innovation in the field of beauty. In 1920, the company employed three chemists; the team continued to grow with 100 by the year 1950, and 1,000 by the year 1984; as recent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugène Schueller
Eugène Paul Louis Schueller (20 March 1881 – 23 August 1957) was a French pharmacist and entrepreneur who was the founder of L'Oréal, the world's leading company in cosmetics and beauty. He was one of the founders of modern advertising. Founding of L'Oréal As a young French chemist of Alsatian paternal origin, Schueller graduated in 1904 from the Institut de Chimie Appliquée de Paris (now Chimie ParisTech). Schueller developed in 1907 an innovative hair-color formula, which he called Oréale. He formulated and manufactured his own products, and sold them to Parisian hairdressers. In 1909, he registered his company, the ''Société Française de Teintures Inoffensives pour Cheveux'', the future L'Oréal. The guiding principles of the company that would become L'Oréal were put into place from the start: research and innovation in the interest of beauty. Support for fascism During the early twentieth century, Schueller provided financial support and held meetings for La ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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