Abstract
Sebaceous substance and sweat constitute an acid grease film on the skin. This acid grease film protects the skin from dryness and bacteria propagation. This film, on the other side, causes the soil of clothing by mixing with dust in the air and stratum corneum dropped off the skin. In the climate chamber we studied the relation between the environmental climate and sebaceous substance or sweat excreated from the skin in the space of clothing and skin. We also measured the quantity of squalen in sebaceous substance by osmic acid method and the quantity of sweat by water blue method. The results were as follows :
1) Sebaceous substance and sweat from the skin were effected by not only air temperature but air humidity.
2) A squalen spot excreted on the forehead was larger than the one on the chest in size and it linearly increased with air temperature.
3) Number of squalen spot (n/cm2) was increased by about 6 % in proportion to the increase of the skin temperature by 10 °C in 80 % R. H.
4) The quantity of sweat excreated on the chest was more than the one on the arm and the forehead.
