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D1opr TIL: It's hard to find deodorants in Korea because most Koreans lack the gene that cause body oder.
R7kA6 TIL that most Koreans do not use deodorant due to a gene called ABCC11, which prevents sweat from producing odor.
E1xmP TIL most Koreans don't produce body odor due to large scale dominance of the gene ABCC11. As a consequence, deodorant is a rare commodity.