How does the perspiration odour occur and why do we perspire?
Perspiration is vital for our bodies: We regulate our body temperature by the evaporation of perspiration from the surface of the skin. In addition to sweat glands all over the body there are special sweat pores in the underarm, facial and genital regions. The production of specific perspiration from these pores is hormonally and emotionally controlled, e.g. by the production of adrenalin in a state of fright, pain or physical exercise. These sweat pores produce a milky odourless substance. The typical perspiration odour is a result of the intervention of bacteria present naturally on our skin in these areas of the body. In particular in the underarm region, perspiration cannot evaporate easily and therefore bacteria are able to multiply there faster. This means that unpleasant bodily odours can form which can be combated by the use of a deodorant or antiperspirant.