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 Tanning
occurs gradually through the stimulation and oxidation of
melanin in the skin during exposure to ultraviolet rays. UVB
(shorter ultraviolet rays) trigger melanin production deep
in the skin. When these activated melanin granules travel
to the surface, UVA (longer ultraviolet rays) cause the melanin
to oxidize and turn brown. Too much UVB causes sunburn (erythema).
It is difficult to measure the equivalency of the UV light
emitted by indoor tanning equipment to that of the sun.
Just as indoor tanning equipment and lamps differ in strength,
the sun's strength is dependent on such factors as altitude,
cloud cover and pollution. Therefore, it is important to
follow the manufacture's recommended exposure schedule when
tanning indoors and to wear sunscreen when outside.
The best measure to determine if you are tanning properly
is common sense. All exposure to UV light, whether indoors
or outside, should be gradual and moderate. Tanners must
be responsible for making informed decisions and should
exercise good judgment in forming tanning objectives. Tan
smart, don't burn.
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