The use of deodorants with the effect of antiperspirant not only helps to avoid unpleasant stains on the shirt and smell, but also negatively affects the composition of the skin microbiome - a combination of bacteria that live on the skin of any person
Researchers from the University of North Carolina have shown in a practical way how microbiomes are changing under the aggressive influence of an antiperspirant.
The scientists invited a group of volunteers consisting of men and women, and divided the participants into subgroups. Representatives of the first subgroup, 3 men and 4 women, always used antiperspirants to prevent sweating. In the second group, participants, 3 men and 2 women, used deodorants containing ethanol or another antimicrobial drug. Volunteers from the third subgroup, 3 men and 2 women, did not use any means at all to neutralize perspiration.
During the experiment, which lasted 8 days, several strokes from the armpit were taken from the volunteers between 11 am and 1 am, and the participants were given the task of using antiperspirant on the first day, not using them from day 2 to 6. their use on the 7th and 8th day of the experiment.
Researchers have grown microflora that lived in the armpits of volunteers on different days of experience, and found that participants who had previously used antiperspirants had the least microbes in smears on the first day. By the third day, people who refused to use antiperspirants had an increase in microflora, and by day 6, all participants had approximately the same composition of the microbiome.
However, scientists noted that returning to antiperspirants on days 7 and 8 of the experiment resulted in a decrease in the number of microbes, which proved the dependence of the skin microbiome on the composition of cosmetics that are used to combat the smell of sweat.
Scientists analyzed microflora samples and found that 62% of them were corynebacteria that are involved in the formation of an unpleasant odor, but protect the body from pathogenic bacteria. The researchers noted that the density of corynebacteria among participants who used an antiperspirant was only 14% of the norm.