The key is the ABCC11 gene, which helps mask body odor. Studies show only about 2% of Europeans carry this gene, while it is widespread among East Asians. In South Korea, the absence of ABCC11 is extremely rare, affecting just 0.006% of the population.
This genetic difference stems from how sweat glands function. Those without the ABCC11 gene produce sweat that, when broken down by bacteria, emits a stronger odor. For East Asians with the gene, such odor is far less noticeable.
As a result, deodorant use is not a daily necessity in East Asia. Stores stock fewer options, and marketing focuses less on odor control compared to Western markets, where it’s a personal care staple.