"follicle it pushed older cells out and that is what becomes the leg hair. After the older cells become hard and leave the follicle, they form a hair shaft. The hair shaft is mostly made up of dead tissue and a protein that is known as keratin. It is said that hair growth occurs during the ""growing"" phase of the follicle, and then retained as dead club hair during the ""resting"" phase. The old club hair might be lost within the following ""growing"" phase. Men are seen to be much hairier than women, even though men and women are much"
"Keratin Keratin () is one of a family of fibrous structural proteins. It is the key structural material making up hair, horns, claws, hooves, and the outer layer of human skin. Keratin is also the protein that protects epithelial cells from damage or stress. Keratin is extremely insoluble in water and organic solvents. Keratin monomers assemble into bundles to form intermediate filaments, which are tough and form strong unmineralized epidermal appendages found in reptiles, birds, amphibians, and mammals. The only other biological matter known to approximate the toughness of keratinized tissue is chitin. Keratin derives from Greek ' from '"
"Nail (anatomy) A nail is a horn-like envelope covering the tips of the fingers and toes in most primates and a few other mammals. Nails are similar to claws in other animals. Fingernails and toenails are made of a tough protective protein called alpha-keratin. This protein is also found in the hooves and horns of different animals. The nail consists of the nail plate, the nail matrix and the nail bed below it, and the grooves surrounding it. The matrix, sometimes called the ""matrix unguis"", keratogenous membrane, nail matrix, or onychostroma, is the tissue (or germinal matrix) which the nail"
"generally made from animal hair, or —in certain situations—the first hair taken from a baby's head (said to bring good luck in the Imperial examinations). Brush handles are commonly constructed from bamboo, but special brushes may have handles of sandalwood, jade, carved bone/ivory, or other precious materials. Modern brushes are primarily white goat hair (羊毫), black rabbit hair (紫毫), yellow weasel hair (黄鼠毫/狼毫), or a combination mix. Ancient brushes, and some of the more valuable ones available on the market may be made with the hair of any number of different types of animals. Each type of hair has a"
"made from keratin, which is also the protein that makes up skin, feathers, nails, hooves, claws, and horns. ""The way I think a lot of people understand fur versus hair is in the density of follicles,"" says Ross McPhee, Curator of the Department of Mammalogy at the American Museum of Natural History. ""So for fur-bearing animals—which were converted into coats and so-forth—people always wanted it to be something that was very dense, so there’s the idea therefore that fur is dense, and it certainly is in [the] kinds of fur-bearers that we use for this purpose. Whereas hair is not"
"for the science that is associated with the study of feathers. Feathers are among the most complex integumentary appendages found in vertebrates and are formed in tiny follicles in the epidermis, or outer skin layer, that produce keratin proteins. The β-keratins in feathers, beaks and claws — and the claws, scales and shells of reptiles — are composed of protein strands hydrogen-bonded into β-pleated sheets, which are then further twisted and crosslinked by disulfide bridges into structures even tougher than the α-keratins of mammalian hair, horns and hoof. The exact signals that induce the growth of feathers on the skin"
"products containing chemicals. ""Hair dyes represent the largest segment of chemical products in the hair market today. As such, they are the main source of chemical exposure among hairdressers"". Toluene is a clear, water insoluble liquid with a distinct and pungent smell, similar to paint thinners. Toluene is found in cosmetic products like nail polish, nail glue, and hair dyes and is widely used as an industrial solvent and is used to make fingernail polishes, lacquers, adhesives, rubber, and paint thinners. It is used in the production of benzene, gasoline, nylon, plastics, and polyurethane. Toluene can be found on cosmetic"
"lanolin from sheep's wool is often found in lip balm and moisturizers; stearic acid is a common ingredient in face creams, shaving foam and shampoos, (as with glycerine, it can be plant-based, but is usually animal-derived); Lactic acid, an alpha-hydroxy acid derived from animal milk, is used in moisturizers; allantoin— from the comfrey plant or cows' urine —is found in shampoos, moisturizers and toothpaste; and carmine from scale insects, such as the female cochineal, is used in food and cosmetics to produce red and pink shades; ""Animal Ingredients A to Z"" (2004) and ""Veganissimo A to Z"" (2013) list which"
"the other, about the proper labeling and health warning of the products. The dispute centered about the chemical compounds formaldehyde () and methylene glycol (), which are the active ingredients of the process, responsible for binding the keratin to the hair. Formaldehyde is a gas that, when dissolved in water (including fluids in the human body), converts partially to methylene glycol. In the liquid, the two compounds coexist in a chemical equilibrium. Formaldehyde in the air has long been recognized as a major occupational hazard in many industries; such as those using urea-formaldehyde (UF) adhesives, or UF-based products like fiberboard,"
"Pearl A pearl is a hard glistening object produced within the soft tissue (specifically the mantle) of a living shelled mollusk or another animal, such as a conulariid. Just like the shell of a mollusk, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite) in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur. The finest quality natural pearls have been highly valued as gemstones and objects of beauty for many centuries. Because of"
"humans became capable of obtaining and working with more difficult materials, those materials were added to the range of available substances. But nowadays synthetic materials were added. In modern manufacturing, the most common bead materials are wood, plastic, glass, metal, and stone. Beads are still made from many naturally occurring materials, both organic (i.e., of animal- or plant-based origin) and inorganic (purely mineral origin). However, some of these materials now routinely undergo some extra processing beyond mere shaping and drilling such as color enhancement via dyes or irradiation. The natural organics include bone, coral, horn, ivory, seeds (such as tagua"
"Henna Henna () is a dye prepared from the plant ""Lawsonia inermis"", also known as hina, the henna tree, the mignonette tree, and the Egyptian privet, the sole species of the genus ""Lawsonia"". ""Henna"" can also refer to the temporary body art resulting from the staining of the skin from the dyes (see also mehndi). Henna has been used since antiquity to dye skin, hair and fingernails, as well as fabrics including silk, wool and leather. Historically, henna was used in the Arabian Peninsula, Indian Subcontinent, near and Middle East, parts of Southeast Asia, Eastern Europe, the Caucasus, Carthage, other"
"habitual locomotion on small-diameter branches. It also indicates keel-shaped nails of ""Callitrichines"" (a family of New World monkeys) is a derived postural adaptation rather than retained ancestral condition. Nail (anatomy) A nail is a horn-like envelope covering the tips of the fingers and toes in most primates and a few other mammals. Nails are similar to claws in other animals. Fingernails and toenails are made of a tough protective protein called alpha-keratin. This protein is also found in the hooves and horns of different animals. The nail consists of the nail plate, the nail matrix and the nail bed below"
"cosmetics, paint, varnish, turpentine, rubber, latex, lubricants, linoleum, plastics, inks, and gums. Renewable fuels from plants include firewood, peat and other biofuels. The fossil fuels coal, petroleum and natural gas are derived from the remains of aquatic organisms including phytoplankton in geological time. Structural resources and fibres from plants are used to construct dwellings and to manufacture clothing. Wood is used not only for buildings, boats, and furniture, but also for smaller items such as musical instruments and sports equipment. Wood is pulped to make paper and cardboard. Cloth is often made from cotton, flax, ramie or synthetic fibres such"
"functional nanomaterials. The structure of foraminifera (mainly chalk) and viruses (protein, capsid), the wax crystals covering a lotus or nasturtium leaf, spider and spider-mite silk, the blue hue of tarantulas, the ""spatulae"" on the bottom of gecko feet, some butterfly wing scales, natural colloids (milk, blood), horny materials (skin, claws, beaks, feathers, horns, hair), paper, cotton, nacre, corals, and even our own bone matrix are all natural ""organic"" nanomaterials. Natural ""inorganic"" nanomaterials occur through crystal growth in the diverse chemical conditions of the Earth's crust. For example, clays display complex nanostructures due to anisotropy of their underlying crystal structure, and"
"mourning jewelry, a memento of a friend or loved one. Hairwork, an art still practiced today by the Victorian Hairwork Society, was a popular needlework method, often resulting in 2-dimensional mourning wreaths and graveyard scenes, worked in hair on a fabric ground. Wool, because of its ability to wick moisture and resist flame, was commonly used in Western textiles throughout history, and might present itself in the form of bedlinens, clothing, and needlework. Hair (both human and animal) mainly consists of a protein, keratin, the fibers of which give the inner core of hair a great deal of strength. Hydrogen"
"Nacre Nacre ( also ), also known as mother of pearl, is an organic-inorganic composite material produced by some molluscs as an inner shell layer; it also makes up the outer coating of pearls. It is strong, resilient, and iridescent. Nacre is found in some of the most ancient lineages of bivalves, gastropods, and cephalopods. However, the inner layer in the great majority of mollusc shells is porcellaneous, not nacreous, and this usually results in a non-iridescent shine, or more rarely in non-nacreous iridescence such as ""flame structure"" as is found in conch pearls. The outer layer of pearls and"
"provided by means of forestry, which has been used for construction, housing and firewood since ancient times. With regard to pharmacy ingredients and legal and illegal drugs, plants are important sources, however e.g. venom of snakes, frogs and insects has been a valuable renewable source of pharmacological ingredients. Before GMO production set in, insulin and important hormones were based on animal sources. Feathers, an important byproduct of poultry farming for food, is still being used as filler and as base for keratin in general. Same applies for the chitin produced in farming Crustaceans which may be used as base of"
"from the minerals manganese and hematite. Manganese is still used today by the Aranda people, a group of indigenous Australians, as a traditional pigment for coloring the skin during rituals. It is also used by the Hopi Indians of Arizona to color ritual objects. The most famous violet-purple dye in the ancient world was Tyrian purple, made from a type of sea snail called the murex, found around the Mediterranean. In western Polynesia, residents of the islands made a violet dye similar to Tyrian purple from the sea urchin. In Central America, the inhabitants made a dye from a different"
"form of sunnah. Hair Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types, and hair care, but hair is also an important biomaterial primarily composed of protein, notably alpha-keratin. Attitudes towards different hair, such as hairstyles and hair removal, vary widely across different cultures and historical periods, but it is often used to indicate"
"Hair Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types, and hair care, but hair is also an important biomaterial primarily composed of protein, notably alpha-keratin. Attitudes towards different hair, such as hairstyles and hair removal, vary widely across different cultures and historical periods, but it is often used to indicate a person's personal"
"Ivory Ivory is a hard, white material from the tusks (traditionally elephants') and teeth of animals, that can be used in art or manufacturing. It consists mainly of dentine, one of the physical structures of teeth and tusks. The chemical structure of the teeth and tusks of mammals is the same, regardless of the species of origin. The trade in certain teeth and tusks other than elephant is well established and widespread; therefore, ""ivory"" can correctly be used to describe any mammalian teeth or tusks of commercial interest which are large enough to be carved or scrimshawed. It has been"
"Alunogen Alunogen (from French ""alun"", “alum”), also called feather alum and hair salt is a colourless to white (although often coloured by impurities, such as iron substituting for aluminium) fibrous to needle-like aluminium sulfate mineral. It has the chemical formula Al(SO)·17HO. It is often found on the walls of mines and quarries as a secondary mineral. It can be found in the oxidation zones of some ore deposits as well as on burning coal dumps (i.e., as the product of millosevichite hydration). It also forms as a low temperature deposit in fumaroles. It occurs associated with pyrite, marcasite, halotrichite, pickeringite,"
"beliefs or social position, such as their age, sex, or religion. The word ""hair"" usually refers to two distinct structures: Hair fibers have a structure consisting of several layers, starting from the outside: Each strand of hair is made up of the medulla, cortex, and cuticle. The innermost region, the medulla, is not always present and is an open, unstructured region. The highly structural and organized cortex, or second of three layers of the hair, is the primary source of mechanical strength and water uptake. The cortex contains melanin, which colors the fiber based on the number, distribution and types"
"novel theory invokes so-called stabilizing hydrogen-hydrogen bonds between the C4 and C5 hydrogen atoms. Ravatite is a natural mineral consisting of phenanthrene. It is found in small amounts among a few coal burning sites. Ravatite represents a small group of organic minerals. Phenanthrene Phenanthrene is a polycyclic aromatic hydrocarbon composed of three fused benzene rings. The name 'phenanthrene' is a composite of phenyl and anthracene. In its pure form, it is found in cigarette smoke and is a known irritant, photosensitizing skin to light. Phenanthrene appears as a white powder having blue fluorescence. The compound with a phenanthrene skeleton and"
"mixing charcoal of coconut shells with Dorana Oil. Brushes was made by the artists themselves. A grass type called Theli was used for this. The hair from the tails of cats and squirrels, hair from downside of deer, horses and stags, beard of cats have been used for this. Even camel hair sometimes. These were tied to a handle and then used. Some popular artists have been offered from golden handles from king. First, if its in a cave, then it is roughed and then plastered. This plastering was made by clay and hay. Then a layer of white clay"
"are used for jewellery. Among them are: Some gemstones (like pearls, coral, and amber) are classified as organic, meaning that they are produced by living organisms. Others are inorganic, meaning that they are generally composed of and arise from minerals. Some gems, for example, amethyst, have become less valued as methods of extracting and importing them have progressed. Some man-made gems can serve in place of natural gems, such as cubic zirconia, which can be used in place of diamond. For platinum, gold, and silver jewellery, there are many techniques to create finishes. The most common are high-polish, satin/matte, brushed,"
"Tooth enamel Tooth enamel is one of the four major tissues that make up the tooth in humans and many other animals, including some species of fish. It makes up the normally visible part of the tooth, covering the crown. The other major tissues are dentin, cementum, and dental pulp. It is a very hard, white to off-white, highly mineralised substance that acts as a barrier to protect the tooth but can become susceptible to degradation, especially by acids from food and drink. Enamel is the hardest substance in the human body and contains the highest percentage of minerals, 96%,"
"Jewellery Jewellery (British English) or jewelry (American English) consists of small decorative items worn for personal adornment, such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the clothes. From a western perspective, the term is restricted to durable ornaments, excluding flowers for example. For many centuries metal, often combined with gemstones, has been the normal material for jewellery, but other materials such as shells and other plant materials may be used. It is one of the oldest type of archaeological artefact – with 100,000-year-old beads made from ""Nassarius"" shells thought to"
"include placing henna on the bride and grooms hand and cutting of the wedding cake. The next song that follows is “Hena Beyarin ba Dastash Gozarain” and Henna (""Kheena"" by Afghans, a dark-red colored dye which leaves an orange-red color on the skin) is placed on their hands. Historically, little incisions were cut into the bride and groom's palms so that they could be joined in blood. As time progressed it was replaced with henna (also spelled as hennah). Henna is a plant and which is use for dying hair, fingernails, leather, and wool. Henna is considered more sanitary and"
"fibre), and synthetic (nylon, polyester, acrylic). The first three are natural. In the 20th century, they were supplemented by artificial fibres made from petroleum. Textiles are made in various strengths and degrees of durability, from the finest microfibre made of strands thinner than one denier to the sturdiest canvas. Textile manufacturing terminology has a wealth of descriptive terms, from light gauze-like gossamer to heavy grosgrain cloth and beyond. Animal textiles are commonly made from hair, fur, skin or silk (in the silkworms case). Wool refers to the hair of the domestic goat or sheep, which is distinguished from other types"
"Feather Feathers are epidermal growths that form the distinctive outer covering, or plumage, on birds, other extinct species of dinosaurs, and possibly pterosaurs. They are considered the most complex integumentary structures found in vertebrates and a premier example of a complex evolutionary novelty. They are among the characteristics that distinguish the extant birds from other living groups. Although feathers cover most parts of the body of birds, they arise only from certain well-defined tracts on the skin. They aid in flight, thermal insulation, and waterproofing. In addition, coloration helps in communication and protection. Plumology (or plumage science) is the name"
"weight than silk protein powders and are moisturizing to skin and hair. Silk amino acids are used in formulating shampoos, conditioner, hair treatments, bodywash, body lotions, cleansers, toners and facial moisturizers, mascara, lipstick and color cosmetics. Silk is made up of two primary proteins; a fibrous protein known as fibroin, and a sticky protein known as sericin, with the two comprising 70–80% and 20–30% of silk, respectively. Both of these proteins provide the unique functionality of silk that makes silk clothes so unique and so popular, with the production of silk material dating back to as early as 3500 BC."