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  2. First, a little background on all things UV rays and tanning beds. The sun emits three types of ultraviolet radiation: UVA, UVB, and UVC rays. UVA rays are what tan (and age) your skin.

  3. Indoor tanning - Wikipedia

    en.wikipedia.org/wiki/Indoor_tanning

    Indoor tanning involves using a device that emits ultraviolet radiation to produce a cosmetic tan. [ a ] Typically found in tanning salons, gyms, spas, hotels, and sporting facilities, and less often in private residences, the most common device is a horizontal tanning bed, also known as a sunbed or solarium.

  4. Ultraviolet index - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet_index

    Ultraviolet index. The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn -producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general public. The UV index is designed as an open-ended linear scale, directly ...

  5. Sun tanning - Wikipedia

    en.wikipedia.org/wiki/Sun_tanning

    Sun tanning or tanning is the process whereby skin color is darkened or tanned. It is most often a result of exposure to ultraviolet (UV) radiation from sunlight or from artificial sources, such as a tanning lamp found in indoor tanning beds. People who deliberately tan their skin by exposure to the sun engage in a passive recreational activity ...

  6. Sunless tanning - Wikipedia

    en.wikipedia.org/wiki/Sunless_tanning

    Sunless tanning, also known as UV filled tanning, self tanning, spray tanning (when applied topically), or fake tanning, refers to the effect of a suntan without exposure to the Sun. Sunless tanning involves the use of oral agents (carotenids), or creams, lotions or sprays applied to the skin. [1] Skin-applied products may be skin-reactive ...

  7. Health effects of sunlight exposure - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_sunlight...

    Exposure of skin to ultraviolet radiation from sunlight presents both positive and negative health effects. On the positive side, UV exposure enables the synthesis of vitamin D3, which is essential for bone health [1] and potentially plays a role in inhibiting certain cancers. [2][3] While vitamin D can also be obtained through dietary ...

  8. Sunlight - Wikipedia

    en.wikipedia.org/wiki/Sunlight

    Skin tanning is achieved by an increase in the dark pigment inside skin cells called melanocytes, and is an automatic response mechanism of the body to sufficient exposure to ultraviolet radiation from the Sun or from artificial sunlamps. Thus, the tan gradually disappears with time, when one is no longer exposed to these sources.

  9. Ultraviolet - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet

    Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs, Cherenkov radiation, and ...