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 A
Sun Block for all Seasons.
UVA radiation, unlike UVB, is consistently the same all day, all month and all year long. UVA rays present the same
damaging effects to the skin in mid-December at 9AM, as in mid-July at 3PM. Deeply penetrating UVA radiation enters
deeper into the skin than UVB, and is significantly more damaging. This is why daily, year-round protection is essential.
SPF, Just not Enough. The SPF rating system does not address
a sun screen's protective capabilities from harmful UVA radiation. SPF is
only a determination of protection from one specific wavelength of ultraviolet
radiation, the UVB (290nm-320-nm). UVB creates a red, painful irritation
first experienced during early sun exposure. UVB is not the only ultraviolet
wavelength damaging to the skin. UVA (320nm-400nm) is the deeper penetrating
wavelength more associated with skin changes of wrinkling, pigmentation
and long term damage. UVB and UVA radiation are both recognized as causing
skin cancer. |
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