Is the skins sun protection period shortened by sweating?
The skin’s actual protection time in the sun is not influenced by sweating. It depends on the person’s pigmentation type, how accustomed the person is to the sun and the UVB intensity at the location of the radiation. It is determined by the following factors: Sun’s position, geographical altitude, extent of air pollution, ozone content of the atmosphere, scattered radiation and reflection. At different locations during different times of the year you should expect considerably changing erythema (or redness) threshold times.
