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| Also know as acne vulgaris' skin disorder characterized by chronic inflammation of the sebaceous glands from retained secretions and Propionibacterium acnes (P.acnes) bacteria. |
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| Also known as acne; a skin disorder characterized by chronic inflammation of the sebaceous glands from retained secretions and bacteria known as Propionibacterium acnes (P. acnes) bacteria. |
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| Small, involuntary muscles n the base of the hair follicle that cause goose flesh, sometimes called goose bumps, and papillae. |
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| The complex of lipids between the cells that keep the skin moist by preventing water evaporation, and to guard against irritants penetrating the skin surface. |
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| Means that the sunscreen product has been shown to protect against both UV-A and UV-B radiation of the sun. |
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| Thickening of the skin cause by continued, repeated pressure on any part of the skin, especially the hands and feet. |
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| Plural; comedones. Also known as whitehead; a follicle impacted with dead cells and solidified sebum, appearing as a small white bump just under the skin surface. Closed comedones have an extremely small surface opening. |
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| Fibrous protein that gives the skin form and strength. |
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| Singular; dermal papilla. Small, cone-shaped elevations at the base of the hair follicles that fit into the hair bulb. |
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| Physician who specializes in diseases and disorders of the skin, hair, and nails. |
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| Medical branch of science that deals with the study of skin and its nature, structure, functions, diseases, and treatment. |
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| Also known as derma, corium, cutis, or true skin; underlying or inner layer of the skin. |
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| Protein base similar to collagen that forms elastic tissue. |
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| epidermal-dermal junction |
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| The top of the papillary layer where it joins the epidermis. |
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| Outermost and thinnest layer of the skin; it is made up of five layers: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum. |
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| A specialist in the cleansing, beautification, and preservation of the health of skin on the entire body, including the face and neck. |
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| A type of melanin that is dark brown to black in color. People with dark colored skin mostly produce eumelanin. There are tow type of melanin; the other type is pheomelanin. |
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| Fibrous protein of cells that is also the principal component of hair and nails. |
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| Tiny grains of pigment (coloring matter) that are producted by melanocytes and deposited into cells in the stratum germinativum layer of the epidermis and in the papillary layers of the dermis. There are two types of melanin: pheomelanin, which is red to yellow in color, and eumelanin, which is dark brown to black. |
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| Cells that produce the dark skin pigment called melanin. |
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| Fibers of the motor nerves that are distributed to the arrector pili muscles attached to hair follicles. Motor nerves carry impulses from the brain to the muscles. |
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| Plural; comedones. Also known as blackhead; hair follicle filled with keratin and sebum. |
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| Outer layer of the dermis, directly beneath the epidermis. |
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| Also known as pimple; small elevation on the skin that contains no fluid but may develop pus. |
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| Also known as papule; small elevation on the skin that contains no fluid but may develop pus. |
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| Abbreviated P. acnes; technical term for acne bacteria. |
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| Raised, inflamed papule with a white or yellow center containing pus in the top of the lesion referred to as the "head" of the pimple. |
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| Deeper layer of the dermis that supplies the skin with oxygen and nutrients; contains fat cells, blood vessels, arrector pili muscles, sebaceous (oil) glands, and nerve endings. |
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| Also known as oil glands; glands connected to hair follicles. Sebum is the fatty or oily secretion of the sebaceous glands. |
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| A fatty or oily secretion that lubricates the skin and preserves the softness of the hair. |
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| Coiled base of the sudoriferous (sweat) gland. |
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| Fibers of the secretory nerve that are distributed to the sudoriferous glands and sebaceous glands. Secretory nerves, which are part of the autonomic nervous system (ANS), regulate the excretion of perspiration from the sweat glands and control the flow of sebum to the surface of the skin. |
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| Fibers of the sensory nerves that react to heat, cold, touch, pressure, and pain. These sensory receptors send messages to the brain. |
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| Also known as horny layer, outer layer of the epidermis. |
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| More commonly called the basal cell layer; deepest, live layer of the epidermis that produces new epidermal skin cells and is responsible for growth. |
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| Also known as granular layer; layer of the epidermis composed of cells that look like granules and are filled with keratin; replaces cells shed from the stratum corneum. |
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| Clear, transparent layer of the epidermis under the stratum corneum. |
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| The spiny layer just above the stratum germinativum layer. |
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| Also known as adipose or subcutis tissue; fatty tissue found below the dermis that gives smoothness and contour to the body, contains fat for use as energy, and also acts as a protective cushion for the outer skin. |
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| Also known as sweat glands; excrete perspiration and detoxify the body by excreting excess salt and unwanted chemicals. |
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| They excrete perspiration and detoxify the body by excreting excess salt and unwanted chemicals. |
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| Small epidermal structures with nerve endings that are sensitive to touch and pressure. |
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| Supports the overall health of the skin; aids in health, function, and repair of skin cells; has been shown to improve the skin's elasticity and thickness. |
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| An important substance needed for proper repair of the skin and tissues; promotes the production of collagen in the skin's dermal tissues; aids in and promotes the skin's healing process. |
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| Enables the body to properly absorb and use calcium, the element needed for proper bone development and maintenance. Vitamin D also promotes rapid healing of the skin. |
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| Helps protect the skin from the harmful effects of the sun's UV light. |
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