Cosmetology Terms and their meanings

    Svetlya Anukudinova

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    1. Actuation Force: The force required to release an aerosol product from an aerosol can or a liquid or a semisolid product from a pump-head container.
    2. After-sun product: A personal care product that is designed to be used after exposure to the sun or other UV radiation. It helps smooth and moisturize the skin as well as provides a cooling effect and relieves pain resulting from sunburn.
    3. Broad Spectrum: A term used to describe sunscreens that provide protection against both UVA and UVB radiations.
    4. Chemical Sunscreen: An organic UV filter that absorbs UV radiation.
    5. Glide: The easiness of moving the stick over a surface, for example, skin.
    6. Melting Point: The temperature at which a solid phase converts to a liquid phase at 1 atm.
    7. Nanoparticle: A particle with a size of 1 to 100 nm.
    8. Payoff: The weight of a product transferred to a surface, for example, the skin, on application.
    9. Photoaging: Intrinsic aging accelerated by sun exposure. Primarily, UVA is responsible for photoaging.
    10. Photoinstability: The lack of stability to UV exposure.
    11. Photostabilizer: An ingredient that can prevent organic UV filters from degrading in exposure to light.
    12. Physical Sunscreen: An inorganic UV filter that reflects and scatters UV radiation.
    13. Primary Sunscreen: A sunscreen product that is primarily used to provide photo protection for the skin. An example is beach sunscreens.
    14. Secondary Sunscreen: A sunscreen product whose primary function is other than skin protection such as skin moisturization, evening the skin tone, covering up skin problems, and prevention of aging. It ha the added benefit (secondary function) of sun protection.
    15. Skin Cancer: Abnormal growth of skin cells that tend to proliferate in an uncontrolled way and in some cases spread. It most often develops on the skin exposed to the sun. Both UVA and UVB radiations are associated with the development of various types of skin cancer.
    16. Softening Point: The temperature at which a solid mass softens but does not melt completely.
    17. SPF: Sun Protection Factor, a measure that indicates how ling it takes for UV rays to redden protected skin compared to how long it takes to redden unprotected skin.
    18. Spray Characteristics: A set of parameters used to characterize sprayable products. The most commonly used parameters include spray rate, spray patterns, and droplet size.
    19. Sunburn: Acute skin damage perceived as redness. UVB radiation is the major cause of sunburn.
    20. Sunscreen: A personal care product that is designed to provide photoprotection against the harmful radiation of the sun, including both UVA and UVB radiations. The protection they provide can be through chemical and or physical methods.
    21. Tanning: Browning of the skin after exposure to the sun.
    22. UV Radiation: Ultraviolet radiation is part of the electromagnetic spectrum. Of the wavelengths of radiation that reach the Earth's surface, UV has the highest energy. Only a portion of the UV radiation reaches the surface of the Earth, including UVA and UVB. They are associated with aging, burning, tanning, and skin cancer.
    23. UVA: Ultraviolet A radiation, ranging from 320 to 400 nm
    24. UVA I: A type of UVA radiation, ranging from 340 to 400 nm
    25. UVA II: A type of UVA radiation, ranging from 320 to 340 nm
    26. UVB: Ultraviolet B radiation, ranging from 280 to 320 nm
    27. Valve clogging: A quality proven of aerosol sunscreen products. It means that the product cannot be dispensed by pushing down the valve.
    28. Vitamin D:  A fat-soluble vitamin, which has a significant role in bone health and the prevention of osteoporosis and osteomalacia. It is produced in general by UV exposure.
    29. Waterproofing agent: An ingredient that is added to sunscreen formulations to increase their water resistance properties.
    30. Water resistance: A term used to describe products that are water-repellent.



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