BSIP JOLYOT / SCIENCE PHOTO LIBRARY BSIP JOLYOT / SCIENCE PHOTO LIBRARY
Sunbed. Woman under an ultraviolet light sunbed. She is wearing opaque goggles to protect her eyes from the radiation. Sunbeds are designed to give the skin doses of ultraviolet (UV) light to promote the formation of a suntan. Modern sunbeds use longer-wavelength UV- A light (at around 320-380nm wavelength). Most of the damage associated with sunbathing and sunburn is caused by UV-B light (around 280-320nm). Suntans are formed due to increased production of a pigment called melanin, which protects the skin from over-exposure to UV radiation.
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