Wileyonline | Body odour, which encompasses axillary and foot odour, can communicate a strong non-verbal signal [1, 2]. These odours are often unnoticed by the offender because that person has specific anosmia [3]. As a result, the individual is embarrassed when alerted, and his or her self-confidence is compromised. The offensive body odour also has economical consequences stemming from the need to replace damaged/stained clothes and shoes [4, 5].In contrast to clear findings in animals, the presence of human vomeronasal organs is still being debated. Clearly, the ability to appreciate underarm and foot odours depends solely on an individual’s evolutionary culture and perceptual development. However, the emission of odourless human pheromones has been reviewed and is becoming a popular discussion topic [6].
The human scent is genetically controlled and systemically influenced by dietary and medicinal intake, as well as the application of fragrance products [6–8]. Heavy sweating or hyperhidrosis, particularly at axillary sites, leads to unpleasant odours that cause social embarrassment and reduce self-confidence, especially among women. Hyperhidrosis results from the oversecretion of sweat. Because there is an excessive amount of water in which bacteria can grow, hyperhidrosis is often accompanied by bromhidrosis or osmidrosis or offensive body odour. Both conditions can be treated by topically applying anti-perspirant and deodourant products. Body odour treatment products are part of a multibillion dollar industry [9]. High levels of fragrance are often used in these products to mask malodour [10]. Surprisingly, there is little discussion of odour treatment products in the literature [6], in contrast to other personal care products [11, 12].
This review will summarize the chemical composition and formation of body odour, the use of anti-perspirant, deodourant and herbal products to treat body odour, and a new class of treatment agents that do not change the balance of the skin’s bacterial population.
