Cosmetics ... The manufacture of cosmetics is currently dominated by a small number of multinational corporations that originated in the early 20th century, but the distribution and sale of cosmetics is spread among a wide range of different businesses. The U. S...
Human Genetics ... Genetic differences and inheritance patterns Inheritance of traits for humans are based upon Gregor Mendel's model of inheritance. Mendel deduced that inheritance depends upon discrete units of inheritance, called factors or genes...
Human Hair Growth ... Hair follows a specific growth cycle with three distinct and concurrent phases: anagen, catagen, and telogen phases... All three phases occur simultaneously; one strand of hair may be in the anagen phase, while another is in the telogen phase... The body has different types of hair, including vellus hair and androgenic hair, each with its own type of cellular construction...
Dermis ... It also contains Mechanoreceptors that provide the sense of touch and heat, hair follicles, sweat glands, sebaceous glands, apocrine glands, lymphatic vessels and blood vessels...
Skin ... Fur is dense hair. Primarily, fur augments the insulation the skin provides but can also serve as a secondary sexual characteristic or as camouflage...
History Of Cosmetics ... Japan In Japan, geisha wore lipstick made of crushed safflower petals to paint the eyebrows and edges of the eyes as well as the lips, and sticks of bintsuke wax, a softer version of the sumo wrestlers' hair wax, were used by geisha as a makeup base...
Human Hair Color ... The Fischer–Saller scale, named after Eugen Fischer and Karl Saller, is used in physical anthropology and medicine to determine the shades of hair color... Genetics and biochemistry of hair color See also: Human genetic variation, Race and genetics, and Human genetic clustering Two types of pigment give hair its color: eumelanin and pheomelanin... A low concentration of brown eumelanin results in blond hair, whereas a higher concentration of brown eumelanin will color the hair brown...
Body Odor ... Joseph Jordania explained the presence of patches of hair in human armpits and genitals by the evolutionary need to produce stronger body odor...
Melanin ... The increased production of melanin in human skin is called melanogenesis. Production of melanin is stimulated by DNA damage induced by UVB-radiation, and it leads to a delayed development of a tan...
Physical Attractiveness ... Other important factors include youthfulness, skin clarity and smoothness of skin; and "vivid color" in the eyes and hair...
Human Skin Color ... Melanin is triggered by an enzyme called tyrosinase, which creates the color of skin, eyes, and hair shades...
Hair ... 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 keratin... The word "hair" often refers to two distinct structures: the part beneath the skin, called the hair follicle or when pulled from the skin, called the bulb...